IntegrityError after upgrading to 1.6beta5

[Andreas Hasenack]

I got this backtrace in maas.log when upgrading from 1.5.2+bzr2282-0ubuntu0.2 to beta5:

ERROR 2014-07-18 10:03:34,155 twisted Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 783, in __bootstrap
    self.__bootstrap_inner()
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/python/threadpool.py", line 191, in _worker
    result = context.call(ctx, function, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
    return func(*args,**kw)
  File "/usr/lib/python2.7/dist-packages/provisioningserver/utils/__init__.py", line 294, in wrapper
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/utils/__init__.py", line 206, in call_with_lock
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/utils/async.py", line 145, in call_within_transaction
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/rpc/regionservice.py", line 362, in update
    self._do_insert(cursor)
  File "/usr/lib/python2.7/dist-packages/maasserver/rpc/regionservice.py", line 454, in _do_insert
    cursor.execute(statement, values)
  File "/usr/lib/python2.7/dist-packages/django/db/backends/util.py", line 53, in execute
    return self.cursor.execute(sql, params)
  File "/usr/lib/python2.7/dist-packages/django/db/utils.py", line 99, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/usr/lib/python2.7/dist-packages/django/db/backends/util.py", line 53, in execute
    return self.cursor.execute(sql, params)
django.db.utils.IntegrityError: duplicate key value violates unique constraint "eventloops_name_address_port_key"
DETAIL: Key (name, address, port)=(courage:pid=13556, fe80::223:55ff:fe2c:5378, 59990) already exists.

Gavin debugged it for me in the mailing list. Turns out this machine has a duplicate ipv6 link-local address because of a bridge:
br0 Link encap:Ethernet HWaddr 00:23:55:2c:53:78
          inet addr:10.1.0.1 Bcast:10.1.255.255 Mask:255.255.0.0
          inet6 addr: fe80::223:55ff:fe2c:5378/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:88357707 errors:0 dropped:0 overruns:0 frame:0
          TX packets:172662349 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6541281459 (6.5 GB) TX bytes:306129483057 (306.1 GB)

eth0 Link encap:Ethernet HWaddr 78:2b:cb:8e:56:6b
          inet addr:10.0.7.8 Bcast:10.0.7.255 Mask:255.255.255.0
          inet6 addr: fe80::7a2b:cbff:fe8e:566b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:83209393 errors:0 dropped:1869 overruns:0 frame:0
          TX packets:44154022 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:120405683094 (120.4 GB) TX bytes:4738076825 (4.7 GB)
          Interrupt:19

eth1 Link encap:Ethernet HWaddr 00:23:55:2c:53:78
          inet6 addr: fe80::223:55ff:fe2c:5378/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:82937896 errors:3139 dropped:0 overruns:0 frame:3139
          TX packets:188420263 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6529695865 (6.5 GB) TX bytes:276815240088 (276.8 GB)

eth1 and br0 have the same inet6 addr, since they "share" the mac

# brctl show br0
bridge name bridge id STP enabled interfaces
br0 8000.0023552c5378 no eth1

[Gavin Panella (allenap)]

Do I target this to 1.6.0 or 1.6.1?