2019-01-07 15:43:55 twisted.scripts: [info] twistd 17.9.0 (/usr/bin/python3 3.6.7) starting up.
2019-01-07 15:43:55 twisted.scripts: [info] reactor class: twisted.internet.asyncioreactor.AsyncioSelectorReactor.
2019-01-07 15:43:56 maasserver.regiondservices.active_discovery: [info] Active network discovery: Discovery interval set to 10800 seconds.
2019-01-07 15:43:56 provisioningserver.utils.services: [info] Starting beaconing for interfaces: {'eth1', 'eth0', 'virbr0'}
2019-01-07 15:43:56 provisioningserver.utils.services: [info] Beaconing process for eth1 started.
2019-01-07 15:43:56 provisioningserver.utils.services: [info] Beaconing process for eth0 started.
2019-01-07 15:43:56 provisioningserver.utils.services: [info] Beaconing process for virbr0 started.
2019-01-07 15:43:56 maasserver.regiondservices.active_discovery: [info] Active network discovery: Active scanning is not enabled on any subnet. Skipping periodic scan.
2019-01-07 15:43:56 maasserver.listener: [error] Unable to connect to database: dictionary changed size during iteration
2019-01-07 15:43:56 stderr: [error] request to http://127.0.0.1:5240/MAAS/metadata/2012-03-01/ failed. sleeping 1.: <urlopen error [Errno 111] Connection refused>
2019-01-07 15:43:57 maasserver.region_controller: [info] Successfully configured proxy.
2019-01-07 15:43:57 stderr: [error] request to http://127.0.0.1:5240/MAAS/metadata/2012-03-01/ failed. sleeping 1.: <urlopen error [Errno 111] Connection refused>
2019-01-07 15:43:57 provisioningserver.utils.services: [info] observe-beacons[eth1]: tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size 16384 bytes
2019-01-07 15:43:57 provisioningserver.utils.services: [info] observe-beacons[virbr0]: tcpdump: listening on virbr0, link-type EN10MB (Ethernet), capture size 16384 bytes
2019-01-07 15:43:57 provisioningserver.utils.services: [info] observe-beacons[eth0]: tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 16384 bytes
2019-01-07 15:43:58 twisted.scripts: [info] twistd 17.9.0 (/usr/bin/python3 3.6.7) starting up.
2019-01-07 15:43:58 twisted.scripts: [info] reactor class: twisted.internet.asyncioreactor.AsyncioSelectorReactor.
2019-01-07 15:43:58 twisted.scripts: [info] twistd 17.9.0 (/usr/bin/python3 3.6.7) starting up.
2019-01-07 15:43:58 twisted.scripts: [info] reactor class: twisted.internet.asyncioreactor.AsyncioSelectorReactor.
2019-01-07 15:43:58 twisted.internet.protocol.Factory: [info] IPCMaster connection established (HOST:UNIXAddress('/var/lib/maas/maas-regiond.sock') PEER:UNIXAddress(None))
2019-01-07 15:43:58 -: [info] IPCWorker connection established (HOST:UNIXAddress(None) PEER:UNIXAddress('/var/lib/maas/maas-regiond.sock'))
2019-01-07 15:43:58 twisted.scripts: [info] twistd 17.9.0 (/usr/bin/python3 3.6.7) starting up.
2019-01-07 15:43:58 twisted.scripts: [info] reactor class: twisted.internet.asyncioreactor.AsyncioSelectorReactor.
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:806 IPC connected.
2019-01-07 15:43:58 -: [info] IPCWorker connection established (HOST:UNIXAddress(None) PEER:UNIXAddress('/var/lib/maas/maas-regiond.sock'))
2019-01-07 15:43:58 twisted.internet.protocol.Factory: [info] IPCMaster connection established (HOST:UNIXAddress('/var/lib/maas/maas-regiond.sock') PEER:UNIXAddress(None))
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:807 IPC connected.
2019-01-07 15:43:58 maasserver.listener: [error] Unable to connect to database: dictionary changed size during iteration
2019-01-07 15:43:58 twisted.scripts: [info] twistd 17.9.0 (/usr/bin/python3 3.6.7) starting up.
2019-01-07 15:43:58 twisted.scripts: [info] reactor class: twisted.internet.asyncioreactor.AsyncioSelectorReactor.
2019-01-07 15:43:58 -: [info] IPCWorker connection established (HOST:UNIXAddress(None) PEER:UNIXAddress('/var/lib/maas/maas-regiond.sock'))
2019-01-07 15:43:58 maasserver.listener: [error] Unable to connect to database: dictionary changed size during iteration
2019-01-07 15:43:58 twisted.internet.protocol.Factory: [info] IPCMaster connection established (HOST:UNIXAddress('/var/lib/maas/maas-regiond.sock') PEER:UNIXAddress(None))
2019-01-07 15:43:58 -: [info] IPCWorker connection established (HOST:UNIXAddress(None) PEER:UNIXAddress('/var/lib/maas/maas-regiond.sock'))
2019-01-07 15:43:58 twisted.internet.protocol.Factory: [info] IPCMaster connection established (HOST:UNIXAddress('/var/lib/maas/maas-regiond.sock') PEER:UNIXAddress(None))
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:808 IPC connected.
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:805 IPC connected.
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:806 opened RPC listener on port:5250.
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:807 opened RPC listener on port:5251.
2019-01-07 15:43:58 maasserver.listener: [info] Listening for database notifications.
2019-01-07 15:43:58 maasserver.region_controller: [info] Reloaded DNS configuration; regiond started.
2019-01-07 15:43:58 maasserver.listener: [error] Unable to connect to database: dictionary changed size during iteration
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:808 opened RPC listener on port:5252.
2019-01-07 15:43:58 maasserver.ipc: [info] Worker pid:805 opened RPC listener on port:5253.
2019-01-07 15:43:58 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:43:59 maasserver.listener: [info] Listening for database notifications.
2019-01-07 15:43:59 sstreams: [info] com.ubuntu.maas:daily:centos-bases-download/com.ubuntu.maas.daily:centos-bases:6.6:amd64: to_add=['20180801_02'] to_remove=[]
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2019-01-07 15:43:59 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:43:59 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:00 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:00 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:00 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-p: to_add=['20170424.1'] to_remove=[]
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2019-01-07 15:44:01 maasserver.listener: [info] Listening for database notifications.
2019-01-07 15:44:01 maasserver.listener: [info] Listening for database notifications.
2019-01-07 15:44:01 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:01 maasserver.listener: [info] Listening for database notifications.
2019-01-07 15:44:01 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:01 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 sstreams: [info] com.ubuntu.maas:daily:centos-bases-download/com.ubuntu.maas.daily:centos-bases:6.6:amd64: to_add=['20180801_02'] to_remove=[]
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2019-01-07 15:44:02 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44872))
2019-01-07 15:44:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53210))
2019-01-07 15:44:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43492))
2019-01-07 15:44:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5253) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 41344))
2019-01-07 15:44:02 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:44872'.
2019-01-07 15:44:02 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53210'.
2019-01-07 15:44:02 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43492'.
2019-01-07 15:44:02 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:41344'.
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 regiond: [info] 127.0.0.1 POST /MAAS/metadata/2012-03-01/ HTTP/1.1 --> 200 OK (referrer: -; agent: Python-urllib/3.6)
2019-01-07 15:44:02 maasserver.models.signals.interfaces: [info] mpqemubr0-dummy (physical) on maas-devel: VLAN updated to match mpqemubr0 (bridge) on maas-devel (vlan=5004).
2019-01-07 15:44:02 provisioningserver.utils.services: [info] New interface monitoring state: {'eth0': {'neighbour': True, 'mdns': True}, 'eth1': {'neighbour': True, 'mdns': True}, 'mpqemubr0-dummy': {'neighbour': False, 'mdns': True}, 'virbr0': {'neighbour': True, 'mdns': True}, 'br0': {'neighbour': False, 'mdns': True}, 'br1': {'neighbour': False, 'mdns': True}, 'mpqemubr0': {'neighbour': False, 'mdns': True}}
2019-01-07 15:44:02 provisioningserver.utils.services: [info] Starting neighbour discovery for interfaces: {'eth1', 'eth0', 'virbr0'}
2019-01-07 15:44:02 provisioningserver.utils.services: [info] Neighbour observation process for eth1 started.
2019-01-07 15:44:02 provisioningserver.utils.services: [info] Neighbour observation process for eth0 started.
2019-01-07 15:44:03 provisioningserver.utils.services: [info] Neighbour observation process for virbr0 started.
2019-01-07 15:44:03 provisioningserver.utils.services: [info] mDNS observation process started.
2019-01-07 15:44:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:03 RegionServer,0,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43492))
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-p: to_add=['20170424.1'] to_remove=[]
2019-01-07 15:44:03 maasserver.region_controller: [info] Successfully configured proxy.
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-q: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-r: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-s: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-t: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:armhf:highbank-highbank: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-p: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-q: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:03 RegionServer,0,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44872))
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-r: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-s: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-t: to_add=['20170424'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-t: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-u: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-v: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-w: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-x: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-x-lowlatency: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-t: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 maasserver.ipc: [info] Worker pid:805 registered RPC connection to ('amhqrw', '192.168.151.2', 5253).
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-u: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-v: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-w: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-x: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:xgene-uboot: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:xgene-uboot-mustang: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:generic-lpae-generic-lpae: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-t: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-u: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-v: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-w: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-x: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:keystone-keystone: to_add=['20161014'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-t: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-u: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-v: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-w: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-x: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-x-lowlatency: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-t: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-u: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-v: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-w: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-x: to_add=['20181203'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:ga-16.04: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:ga-16.04-lowlatency: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:hwe-16.04: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:hwe-16.04-edge: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:hwe-16.04-lowlatency: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:hwe-16.04-lowlatency-edge: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:arm64:ga-16.04: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:arm64:hwe-16.04: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:arm64:hwe-16.04-edge: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:arm64:xgene-uboot: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:arm64:xgene-uboot-mustang: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:armhf:ga-16.04: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:armhf:generic-lpae-generic-lpae: to_add=['20190101'] to_remove=[]
2019-01-07 15:44:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:03 RegionServer,0,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53210))
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2019-01-07 15:44:03 maasserver.dhcp: [info] Successfully configured DHCPv4 on rack controller 'maas-devel (amhqrw)'.
2019-01-07 15:44:03 maasserver.dhcp: [info] Successfully configured DHCPv6 on rack controller 'maas-devel (amhqrw)'.
2019-01-07 15:44:03 sstreams: [info] com.ubuntu.maas:daily:1:bootloader-download/com.ubuntu.maas.daily:1:grub-efi-signed:uefi:amd64: to_add=['20181123.0'] to_remove=[]
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2019-01-07 15:44:03 provisioningserver.utils.services: [info] observe-arp[eth1]: tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size 64 bytes
2019-01-07 15:44:04 provisioningserver.utils.services: [info] observe-arp[virbr0]: tcpdump: listening on virbr0, link-type EN10MB (Ethernet), capture size 64 bytes
2019-01-07 15:44:04 provisioningserver.utils.services: [info] observe-arp[eth0]: tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 64 bytes
2019-01-07 15:44:04 sstreams: [info] com.ubuntu.maas:daily:centos-bases-download/com.ubuntu.maas.daily:centos-bases:6.6:amd64: to_add=[] to_remove=[]
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2019-01-07 15:44:04 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:04 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44914))
2019-01-07 15:44:04 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53252))
2019-01-07 15:44:04 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43534))
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:44914'.
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53252'.
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43534'.
2019-01-07 15:44:04 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:04 RegionServer,1,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44914))
2019-01-07 15:44:04 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:04 RegionServer,1,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53252))
2019-01-07 15:44:04 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:04 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:04 RegionServer,1,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43534))
2019-01-07 15:44:05 maasserver.region_controller: [info] Reloaded DNS configuration: 
	 * ip 10.35.203.1 connected to maas-devel on mpqemubr0
	 * added subnet 10.35.203.0/24
	 * ip 192.168.151.2 connected to maas-devel on br1
	 * added subnet 192.168.151.0/24
	 * ip 192.168.150.71 connected to maas-devel on br0
	 * added subnet 192.168.150.0/24
	 * ip 192.168.122.1 connected to maas-devel on virbr0
	 * added subnet 192.168.122.0/24
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-p: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-q: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-r: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-s: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:amd64:hwe-t: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:armhf:highbank-highbank: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-p: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-q: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-r: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-s: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:12.04:i386:hwe-t: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-t: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-u: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-v: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-w: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-x: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:amd64:hwe-x-lowlatency: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-t: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-u: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-v: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:hwe-w: to_add=[] to_remove=[]
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2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:arm64:xgene-uboot: to_add=[] to_remove=[]
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2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-t: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-u: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-v: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-w: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:hwe-x: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:armhf:keystone-keystone: to_add=[] to_remove=[]
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2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:i386:hwe-x-lowlatency: to_add=[] to_remove=[]
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2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:14.04:ppc64el:hwe-x: to_add=[] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:v3:download/com.ubuntu.maas.daily:v3:boot:16.04:amd64:ga-16.04: to_add=[] to_remove=[]
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2019-01-07 15:44:05 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44928))
2019-01-07 15:44:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43548))
2019-01-07 15:44:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53266))
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:44928'.
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53266'.
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43548'.
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2019-01-07 15:44:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:05 RegionServer,2,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43548))
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:1:bootloader-download/com.ubuntu.maas.daily:1:grub-ieee1275:open-firmware:ppc64el: to_add=['20181212.0'] to_remove=[]
2019-01-07 15:44:05 sstreams: [info] com.ubuntu.maas:daily:1:bootloader-download/com.ubuntu.maas.daily:1:pxelinux:pxe:i386: to_add=['20180807.0'] to_remove=[]
2019-01-07 15:44:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:05 RegionServer,2,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53266))
2019-01-07 15:44:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:05 RegionServer,2,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44928))
2019-01-07 15:44:06 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44956))
2019-01-07 15:44:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53294))
2019-01-07 15:44:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43576))
2019-01-07 15:44:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:44956'.
2019-01-07 15:44:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43576'.
2019-01-07 15:44:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53294'.
2019-01-07 15:44:06 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:06 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:06 RegionServer,3,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 44956))
2019-01-07 15:44:07 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:07 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:07 RegionServer,3,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43576))
2019-01-07 15:44:07 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:07 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:07 RegionServer,3,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53294))
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/streams/v1/index.json HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/streams/v1/maas:v2:download.json HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/streams/v1/index.json HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/streams/v1/maas:v2:download.json HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/grub-ieee1275/ppc64el/generic/open-firmware/20181212.0/grub2.tar.xz HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:07 regiond: [info] 192.168.150.71 GET /MAAS/images-stream/pxelinux/i386/generic/pxe/20180807.0/syslinux.tar.xz HTTP/1.1 --> 200 OK (referrer: -; agent: python-simplestreams/0.1)
2019-01-07 15:44:08 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:08 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53338))
2019-01-07 15:44:08 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43620))
2019-01-07 15:44:08 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45000))
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53338'.
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45000'.
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43620'.
2019-01-07 15:44:08 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:08 RegionServer,4,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53338))
2019-01-07 15:44:08 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:08 RegionServer,4,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43620))
2019-01-07 15:44:08 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:08 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:08 RegionServer,4,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45000))
2019-01-07 15:44:09 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:09 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53354))
2019-01-07 15:44:09 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45016))
2019-01-07 15:44:09 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43636))
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43636'.
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53354'.
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45016'.
2019-01-07 15:44:09 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:09 RegionServer,5,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53354))
2019-01-07 15:44:09 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:09 RegionServer,5,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45016))
2019-01-07 15:44:09 maasserver.region_controller: [info] Reloaded DNS configuration; rack controller maas-devel connected
2019-01-07 15:44:09 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:09 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:09 RegionServer,5,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43636))
2019-01-07 15:44:10 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:10 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45044))
2019-01-07 15:44:10 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53382))
2019-01-07 15:44:10 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43664))
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53382'.
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45044'.
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43664'.
2019-01-07 15:44:10 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:10 RegionServer,6,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43664))
2019-01-07 15:44:10 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:10 RegionServer,6,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45044))
2019-01-07 15:44:10 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:10 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:10 RegionServer,6,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53382))
2019-01-07 15:44:11 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:11 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53402))
2019-01-07 15:44:11 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45064))
2019-01-07 15:44:11 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43684))
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45064'.
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53402'.
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43684'.
2019-01-07 15:44:12 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:12 RegionServer,7,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45064))
2019-01-07 15:44:12 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:12 RegionServer,7,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43684))
2019-01-07 15:44:12 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:12 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:12 RegionServer,7,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53402))
2019-01-07 15:44:14 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:14 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45080))
2019-01-07 15:44:14 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43700))
2019-01-07 15:44:14 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53418))
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45080'.
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43700'.
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53418'.
2019-01-07 15:44:14 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:14 RegionServer,8,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43700))
2019-01-07 15:44:14 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:14 RegionServer,8,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53418))
2019-01-07 15:44:14 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:14 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:14 RegionServer,8,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45080))
2019-01-07 15:44:15 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:15 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45092))
2019-01-07 15:44:15 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53430))
2019-01-07 15:44:15 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43712))
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45092'.
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53430'.
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43712'.
2019-01-07 15:44:15 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:15 RegionServer,9,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53430))
2019-01-07 15:44:15 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:15 RegionServer,9,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43712))
2019-01-07 15:44:15 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:15 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:15 RegionServer,9,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45092))
2019-01-07 15:44:16 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:16 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45108))
2019-01-07 15:44:16 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53446))
2019-01-07 15:44:16 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43728))
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43728'.
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53446'.
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45108'.
2019-01-07 15:44:16 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:16 RegionServer,10,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45108))
2019-01-07 15:44:16 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:16 RegionServer,10,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43728))
2019-01-07 15:44:16 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:16 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:16 RegionServer,10,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53446))
2019-01-07 15:44:17 -: [info] b'/etc/resolv.conf' changed, reparsing
2019-01-07 15:44:17 -: [info] Resolver added ('127.0.0.53', 53) to server list
2019-01-07 15:44:17 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:17 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45120))
2019-01-07 15:44:17 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53458))
2019-01-07 15:44:17 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43740))
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45120'.
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53458'.
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43740'.
2019-01-07 15:44:18 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:18 RegionServer,11,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45120))
2019-01-07 15:44:18 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:18 RegionServer,11,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53458))
2019-01-07 15:44:18 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:18 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:18 RegionServer,11,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43740))
2019-01-07 15:44:19 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:19 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45136))
2019-01-07 15:44:19 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53474))
2019-01-07 15:44:19 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43756))
2019-01-07 15:44:19 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45136'.
2019-01-07 15:44:19 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43756'.
2019-01-07 15:44:19 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53474'.
2019-01-07 15:44:20 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:20 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:20 RegionServer,12,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53474))
2019-01-07 15:44:20 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:20 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:20 RegionServer,12,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43756))
2019-01-07 15:44:20 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:20 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:20 RegionServer,12,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45136))
2019-01-07 15:44:21 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:21 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45148))
2019-01-07 15:44:21 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53486))
2019-01-07 15:44:21 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43768))
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43768'.
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53486'.
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45148'.
2019-01-07 15:44:21 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:21 RegionServer,13,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53486))
2019-01-07 15:44:21 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:21 RegionServer,13,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45148))
2019-01-07 15:44:21 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:21 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:21 RegionServer,13,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43768))
2019-01-07 15:44:22 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:22 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45172))
2019-01-07 15:44:22 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53510))
2019-01-07 15:44:22 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43792))
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53510'.
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45172'.
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43792'.
2019-01-07 15:44:22 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:22 RegionServer,14,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43792))
2019-01-07 15:44:22 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:22 RegionServer,14,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45172))
2019-01-07 15:44:22 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:22 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:22 RegionServer,14,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53510))
2019-01-07 15:44:23 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:23 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45184))
2019-01-07 15:44:23 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43804))
2019-01-07 15:44:23 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53522))
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45184'.
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43804'.
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53522'.
2019-01-07 15:44:23 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:23 RegionServer,15,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43804))
2019-01-07 15:44:23 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:23 RegionServer,15,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53522))
2019-01-07 15:44:23 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:23 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:23 RegionServer,15,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45184))
2019-01-07 15:44:24 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:24 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45196))
2019-01-07 15:44:24 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53534))
2019-01-07 15:44:24 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43816))
2019-01-07 15:44:24 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45196'.
2019-01-07 15:44:24 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53534'.
2019-01-07 15:44:24 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43816'.
2019-01-07 15:44:24 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:24 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:24 RegionServer,16,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53534))
2019-01-07 15:44:24 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:25 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:25 RegionServer,16,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45196))
2019-01-07 15:44:25 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:25 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:25 RegionServer,16,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43816))
2019-01-07 15:44:26 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:26 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45208))
2019-01-07 15:44:26 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53546))
2019-01-07 15:44:26 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43828))
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45208'.
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43828'.
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53546'.
2019-01-07 15:44:26 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:26 RegionServer,17,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53546))
2019-01-07 15:44:26 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:26 RegionServer,17,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45208))
2019-01-07 15:44:26 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:26 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:26 RegionServer,17,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43828))
2019-01-07 15:44:27 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:27 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53558))
2019-01-07 15:44:27 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45220))
2019-01-07 15:44:27 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43840))
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53558'.
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45220'.
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43840'.
2019-01-07 15:44:27 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:27 RegionServer,18,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45220))
2019-01-07 15:44:27 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:27 RegionServer,18,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43840))
2019-01-07 15:44:27 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:27 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:27 RegionServer,18,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53558))
2019-01-07 15:44:28 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:28 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45236))
2019-01-07 15:44:28 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53574))
2019-01-07 15:44:28 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43856))
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45236'.
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53574'.
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43856'.
2019-01-07 15:44:28 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:28 RegionServer,19,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53574))
2019-01-07 15:44:28 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:28 RegionServer,19,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45236))
2019-01-07 15:44:28 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:28 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:28 RegionServer,19,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43856))
2019-01-07 15:44:29 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:29 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45248))
2019-01-07 15:44:29 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53586))
2019-01-07 15:44:29 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43868))
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53586'.
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45248'.
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43868'.
2019-01-07 15:44:29 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:29 RegionServer,20,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43868))
2019-01-07 15:44:29 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:29 RegionServer,20,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53586))
2019-01-07 15:44:29 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:29 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:29 RegionServer,20,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45248))
2019-01-07 15:44:30 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:30 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45260))
2019-01-07 15:44:30 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53598))
2019-01-07 15:44:30 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43880))
2019-01-07 15:44:30 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45260'.
2019-01-07 15:44:30 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43880'.
2019-01-07 15:44:30 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53598'.
2019-01-07 15:44:31 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:31 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:31 RegionServer,21,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53598))
2019-01-07 15:44:31 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:31 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:31 RegionServer,21,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43880))
2019-01-07 15:44:31 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:31 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:31 RegionServer,21,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45260))
2019-01-07 15:44:32 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:32 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45272))
2019-01-07 15:44:32 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53610))
2019-01-07 15:44:32 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43892))
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53610'.
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43892'.
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45272'.
2019-01-07 15:44:32 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:32 RegionServer,22,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53610))
2019-01-07 15:44:32 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:32 RegionServer,22,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43892))
2019-01-07 15:44:32 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:32 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:32 RegionServer,22,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45272))
2019-01-07 15:44:33 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:33 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45288))
2019-01-07 15:44:33 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53626))
2019-01-07 15:44:33 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43908))
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45288'.
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43908'.
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53626'.
2019-01-07 15:44:33 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:33 RegionServer,23,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43908))
2019-01-07 15:44:33 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:33 RegionServer,23,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53626))
2019-01-07 15:44:33 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:33 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:33 RegionServer,23,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45288))
2019-01-07 15:44:34 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:34 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45300))
2019-01-07 15:44:34 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53638))
2019-01-07 15:44:34 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43920))
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53638'.
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43920'.
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45300'.
2019-01-07 15:44:34 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:34 RegionServer,24,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43920))
2019-01-07 15:44:34 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:34 RegionServer,24,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45300))
2019-01-07 15:44:34 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:34 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:34 RegionServer,24,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53638))
2019-01-07 15:44:35 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:35 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45312))
2019-01-07 15:44:35 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53650))
2019-01-07 15:44:35 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43932))
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45312'.
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43932'.
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53650'.
2019-01-07 15:44:36 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:36 RegionServer,25,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45312))
2019-01-07 15:44:36 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:36 RegionServer,25,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53650))
2019-01-07 15:44:36 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:36 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:36 RegionServer,25,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43932))
2019-01-07 15:44:38 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:38 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45330))
2019-01-07 15:44:38 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53668))
2019-01-07 15:44:38 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43950))
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45330'.
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43950'.
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53668'.
2019-01-07 15:44:38 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:38 RegionServer,26,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45330))
2019-01-07 15:44:38 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:38 RegionServer,26,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43950))
2019-01-07 15:44:38 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:38 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:38 RegionServer,26,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53668))
2019-01-07 15:44:39 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:39 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45342))
2019-01-07 15:44:39 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53680))
2019-01-07 15:44:39 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43962))
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45342'.
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53680'.
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43962'.
2019-01-07 15:44:39 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:39 RegionServer,27,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43962))
2019-01-07 15:44:39 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:39 RegionServer,27,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53680))
2019-01-07 15:44:39 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:39 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:39 RegionServer,27,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45342))
2019-01-07 15:44:40 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:40 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45358))
2019-01-07 15:44:40 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43978))
2019-01-07 15:44:40 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53696))
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45358'.
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53696'.
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43978'.
2019-01-07 15:44:40 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:40 RegionServer,28,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53696))
2019-01-07 15:44:40 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:40 RegionServer,28,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43978))
2019-01-07 15:44:40 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:40 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:40 RegionServer,28,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45358))
2019-01-07 15:44:41 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:41 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53708))
2019-01-07 15:44:41 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43990))
2019-01-07 15:44:41 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45370))
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:43990'.
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53708'.
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45370'.
2019-01-07 15:44:41 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:41 RegionServer,29,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 43990))
2019-01-07 15:44:41 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:41 RegionServer,29,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53708))
2019-01-07 15:44:41 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:41 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:41 RegionServer,29,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45370))
2019-01-07 15:44:42 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:42 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45382))
2019-01-07 15:44:42 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53720))
2019-01-07 15:44:42 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44002))
2019-01-07 15:44:43 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44002'.
2019-01-07 15:44:43 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53720'.
2019-01-07 15:44:43 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45382'.
2019-01-07 15:44:43 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:43 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:43 RegionServer,30,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45382))
2019-01-07 15:44:43 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:44 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:44 RegionServer,30,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44002))
2019-01-07 15:44:44 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:44 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:44 RegionServer,30,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53720))
2019-01-07 15:44:45 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:45 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45400))
2019-01-07 15:44:45 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44020))
2019-01-07 15:44:45 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53738))
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53738'.
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45400'.
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44020'.
2019-01-07 15:44:45 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:45 RegionServer,31,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45400))
2019-01-07 15:44:45 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:45 RegionServer,31,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44020))
2019-01-07 15:44:45 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:45 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:45 RegionServer,31,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53738))
2019-01-07 15:44:46 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:46 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45412))
2019-01-07 15:44:46 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44032))
2019-01-07 15:44:46 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53750))
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45412'.
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53750'.
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44032'.
2019-01-07 15:44:46 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:46 RegionServer,32,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45412))
2019-01-07 15:44:46 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:46 RegionServer,32,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53750))
2019-01-07 15:44:46 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:46 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:46 RegionServer,32,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44032))
2019-01-07 15:44:47 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:47 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45428))
2019-01-07 15:44:47 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53766))
2019-01-07 15:44:47 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44048))
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53766'.
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45428'.
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44048'.
2019-01-07 15:44:47 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:47 RegionServer,33,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45428))
2019-01-07 15:44:47 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:47 RegionServer,33,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44048))
2019-01-07 15:44:47 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:47 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:47 RegionServer,33,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53766))
2019-01-07 15:44:48 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:48 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45440))
2019-01-07 15:44:48 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53778))
2019-01-07 15:44:48 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44060))
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45440'.
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44060'.
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53778'.
2019-01-07 15:44:49 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:49 RegionServer,34,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44060))
2019-01-07 15:44:49 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:49 RegionServer,34,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53778))
2019-01-07 15:44:49 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:49 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:49 RegionServer,34,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45440))
2019-01-07 15:44:50 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:50 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45456))
2019-01-07 15:44:50 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53794))
2019-01-07 15:44:50 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44076))
2019-01-07 15:44:50 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53794'.
2019-01-07 15:44:50 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44076'.
2019-01-07 15:44:50 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45456'.
2019-01-07 15:44:51 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:51 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:51 RegionServer,35,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45456))
2019-01-07 15:44:51 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:51 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:51 RegionServer,35,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53794))
2019-01-07 15:44:51 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:51 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:51 RegionServer,35,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44076))
2019-01-07 15:44:52 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:52 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45468))
2019-01-07 15:44:52 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53806))
2019-01-07 15:44:52 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44088))
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45468'.
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53806'.
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44088'.
2019-01-07 15:44:52 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:52 RegionServer,36,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53806))
2019-01-07 15:44:52 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:52 RegionServer,36,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44088))
2019-01-07 15:44:52 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:52 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:52 RegionServer,36,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45468))
2019-01-07 15:44:53 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:53 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45484))
2019-01-07 15:44:53 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53822))
2019-01-07 15:44:53 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44104))
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45484'.
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53822'.
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44104'.
2019-01-07 15:44:53 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:53 RegionServer,37,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45484))
2019-01-07 15:44:53 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:53 RegionServer,37,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53822))
2019-01-07 15:44:53 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:53 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:53 RegionServer,37,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44104))
2019-01-07 15:44:54 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:54 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53834))
2019-01-07 15:44:54 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44116))
2019-01-07 15:44:54 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45496))
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44116'.
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53834'.
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45496'.
2019-01-07 15:44:54 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:54 RegionServer,38,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45496))
2019-01-07 15:44:54 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:54 RegionServer,38,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53834))
2019-01-07 15:44:54 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:54 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:54 RegionServer,38,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44116))
2019-01-07 15:44:55 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:55 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45508))
2019-01-07 15:44:55 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53846))
2019-01-07 15:44:55 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44128))
2019-01-07 15:44:55 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53846'.
2019-01-07 15:44:55 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44128'.
2019-01-07 15:44:55 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45508'.
2019-01-07 15:44:55 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:55 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:55 RegionServer,39,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45508))
2019-01-07 15:44:55 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:55 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:55 RegionServer,39,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44128))
2019-01-07 15:44:56 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:56 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:56 RegionServer,39,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53846))
2019-01-07 15:44:57 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:57 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45520))
2019-01-07 15:44:57 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53858))
2019-01-07 15:44:57 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44140))
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44140'.
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45520'.
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53858'.
2019-01-07 15:44:58 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:58 RegionServer,40,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45520))
2019-01-07 15:44:58 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:58 RegionServer,40,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44140))
2019-01-07 15:44:58 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:44:58 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:44:58 RegionServer,40,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53858))
2019-01-07 15:44:59 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:44:59 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45538))
2019-01-07 15:44:59 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53876))
2019-01-07 15:44:59 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44158))
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53876'.
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45538'.
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44158'.
2019-01-07 15:45:00 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:00 RegionServer,41,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45538))
2019-01-07 15:45:00 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:00 RegionServer,41,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53876))
2019-01-07 15:45:00 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:00 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:00 RegionServer,41,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44158))
2019-01-07 15:45:01 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:45:01 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53896))
2019-01-07 15:45:01 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45558))
2019-01-07 15:45:01 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44178))
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53896'.
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45558'.
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44178'.
2019-01-07 15:45:01 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:01 RegionServer,42,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45558))
2019-01-07 15:45:01 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:01 RegionServer,42,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53896))
2019-01-07 15:45:01 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:01 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:01 RegionServer,42,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44178))
2019-01-07 15:45:02 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:45:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45570))
2019-01-07 15:45:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53908))
2019-01-07 15:45:02 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44190))
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53908'.
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45570'.
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44190'.
2019-01-07 15:45:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:03 RegionServer,43,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44190))
2019-01-07 15:45:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:03 RegionServer,43,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53908))
2019-01-07 15:45:03 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:03 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:03 RegionServer,43,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45570))
2019-01-07 15:45:05 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:45:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45586))
2019-01-07 15:45:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53924))
2019-01-07 15:45:05 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44206))
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45586'.
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44206'.
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53924'.
2019-01-07 15:45:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:05 RegionServer,44,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53924))
2019-01-07 15:45:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:05 RegionServer,44,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44206))
2019-01-07 15:45:05 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:05 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:05 RegionServer,44,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45586))
2019-01-07 15:45:06 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:45:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53936))
2019-01-07 15:45:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45598))
2019-01-07 15:45:06 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44218))
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45598'.
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53936'.
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44218'.
2019-01-07 15:45:06 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:06 RegionServer,45,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53936))
2019-01-07 15:45:06 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:06 RegionServer,45,::ffff:192.168.150.71: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44218))
2019-01-07 15:45:06 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:06 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:06 RegionServer,45,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45598))
2019-01-07 15:45:07 regiond: [info] 192.168.150.71 GET /MAAS/rpc/ HTTP/1.1 --> 200 OK (referrer: -; agent: provisioningserver.rpc.clusterservice.ClusterClientService)
2019-01-07 15:45:07 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45616))
2019-01-07 15:45:07 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53954))
2019-01-07 15:45:07 twisted.internet.protocol.Factory: [info] RegionServer connection established (HOST:IPv6Address(TCP, '::ffff:192.168.150.71', 5252) PEER:IPv6Address(TCP, '::ffff:192.168.150.71', 44236))
2019-01-07 15:45:07 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.151.2:45616'.
2019-01-07 15:45:07 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:192.168.150.71:44236'.
2019-01-07 15:45:07 maasserver.rpc.regionservice: [info] Rack controller authenticated from '::ffff:10.35.203.1:53954'.
2019-01-07 15:45:07 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:07 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:07 RegionServer,46,::ffff:192.168.151.2: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.151.2', 5250) PEER:IPv6Address(TCP, '::ffff:192.168.151.2', 45616))
2019-01-07 15:45:07 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
	    return func_outside_txn(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
	    return func(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/rackcontrollers.py", line 154, in register
	    rackcontroller.update_interfaces(interfaces, create_fabrics=create_fabrics)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 740, in call_within_transaction
	    return func_within_txn(*args, **kwargs)
	  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
	    return func(*args, **kwds)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 5184, in update_interfaces
	    hints=topology_hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4548, in _update_interface
	    name, config, create_fabrics=create_fabrics, hints=hints)
	  File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 4579, in _update_physical_interface
	    "enabled": is_enabled,
	  File "/usr/lib/python3/dist-packages/maasserver/models/interface.py", line 430, in get_or_create
	    *args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
	    return getattr(self.get_queryset(), name)(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 464, in get_or_create
	    return self.get(**lookup), False
	  File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 384, in get
	    (self.model._meta.object_name, num)
	maasserver.models.interface.MultipleObjectsReturned: get() returned more than one PhysicalInterface -- it returned 2!
	
2019-01-07 15:45:07 maasserver.rpc.regionservice: [info] Rack controller 'None' disconnected.
2019-01-07 15:45:07 RegionServer,46,::ffff:10.35.203.1: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:10.35.203.1', 5251) PEER:IPv6Address(TCP, '::ffff:10.35.203.1', 53954))
2019-01-07 15:45:07 maasserver.rpc.regionservice: [critical] Failed to register rack controller 'None' with the master. Connection will be dropped.
	Traceback (most recent call last):
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 653, in _runCallbacks
	    current.result = callback(current.result, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1442, in gotResult
	    _inlineCallbacks(r, g, deferred)
	  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1384, in _inlineCallbacks
	    result = result.throwExceptionIntoGenerator(g)
	  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 408, in throwExceptionIntoGenerator
	    return g.throw(self.type, self.value, self.tb)
	--- <exception caught here> ---
	  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 679, in _register
	    version=version)
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
	    result = inContext.theWork()
	  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
	    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
	    return func(*args,**kw)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 885, in callInContext
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 234, in wrapper
	    result = func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 712, in call_with_connection
	    return func(*args, **kwargs)
	  File "/usr/lib/python3/dist-packages/maasserver/utils/__init__.py", line 192, in call_with_lock