With the above modification of 'print subnets', I ran this twice: [root@rhel2 ~]# vi /usr/lib/python2.7/site-packages/cloudinit/net/network_state.py [root@rhel2 ~]# rm -Rf /var/lib/cloud/data/* ; cloud-init --force init Cloud-init v. 0.7.9 running 'init' at Fri, 21 Apr 2017 20:59:09 +0000. Up 101437.95 seconds. ci-info: +++++++++++++++++++++++++++++++Net device info+++++++++++++++++++++++++++++++ ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: | Device | Up | Address | Mask | Scope | Hw-Address | ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: | eth0:0: | True | 192.168.0.11 | 255.255.255.0 | . | fa:16:3e:cc:06:c3 | ci-info: | eth1: | True | . | . | . | fa:16:3e:8a:1f:f4 | ci-info: | eth1: | True | . | . | d | fa:16:3e:8a:1f:f4 | ci-info: | eth2: | True | . | . | . | fa:16:3e:78:c2:39 | ci-info: | eth2: | True | . | . | d | fa:16:3e:78:c2:39 | ci-info: | eth0: | True | . | . | . | fa:16:3e:cc:06:c3 | ci-info: | eth0: | True | . | . | d | fa:16:3e:cc:06:c3 | ci-info: | eth3: | True | . | . | . | fa:16:3e:3b:76:55 | ci-info: | eth3: | True | . | . | d | fa:16:3e:3b:76:55 | ci-info: | lo: | True | 127.0.0.1 | 255.0.0.0 | . | . | ci-info: | lo: | True | . | . | d | . | ci-info: | eth2:0: | True | 10.0.0.106 | 255.255.255.0 | . | fa:16:3e:78:c2:39 | ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: ++++++++++++++++++++++++++++Route IPv4 info+++++++++++++++++++++++++++++ ci-info: +-------+-------------+------------+---------------+-----------+-------+ ci-info: | Route | Destination | Gateway | Genmask | Interface | Flags | ci-info: +-------+-------------+------------+---------------+-----------+-------+ ci-info: | 0 | 0.0.0.0 | 10.0.0.250 | 0.0.0.0 | eth2 | UG | ci-info: | 1 | 10.0.0.0 | 0.0.0.0 | 255.255.255.0 | eth2 | U | ci-info: | 2 | 192.168.0.0 | 0.0.0.0 | 255.255.255.0 | eth0 | U | ci-info: +-------+-------------+------------+---------------+-----------+-------+ [{u'routes': [{u'netmask': u'0.0.0.0', u'network': u'0.0.0.0', u'gateway': u'192.168.0.1'}], u'netmask': u'255.255.255.0', u'type': 'static', 'ipv4': True, 'address': u'192.168.0.11'}, {u'routes': [{u'netmask': u'::', u'network': u'::', u'gateway': u'2000:192:168::1'}], u'netmask': u'ffff:ffff:ffff:ffff::', 'address': u'2000:192:168::5', u'type': 'static', 'ipv6': True}] [{u'routes': [{u'netmask': u'::', u'network': u'::', u'gateway': u'2000:172:20::1'}], u'netmask': u'ffff:ffff:ffff:ffff::', 'address': u'2000:172:20::4', u'type': 'static', 'ipv6': True}] [{u'routes': [{u'netmask': u'0.0.0.0', u'network': u'0.0.0.0', u'gateway': u'10.0.0.250'}], u'netmask': u'255.255.255.0', u'type': 'static', 'ipv4': True, 'address': u'10.0.0.106'}, {u'routes': [{u'netmask': u'::', u'network': u'::', u'gateway': u'2000:10::250'}], u'netmask': u'ffff:ffff:ffff:ffff::', 'address': u'2000:10::1', u'type': 'static', 'ipv6': True}] [{u'type': 'dhcp4'}, {u'routes': [{u'netmask': u'::', u'network': u'::', u'gateway': u'2000:10::250'}], u'netmask': u'ffff:ffff:ffff:ffff::', 'address': u'2000:123::2', u'type': 'static', 'ipv6': True}] [root@rhel2 ~]# rm -Rf /var/lib/cloud/data/* ; cloud-init --force init Cloud-init v. 0.7.9 running 'init' at Fri, 21 Apr 2017 20:59:34 +0000. Up 101463.22 seconds. ci-info: +++++++++++++++++++++++++++++++Net device info+++++++++++++++++++++++++++++++ ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: | Device | Up | Address | Mask | Scope | Hw-Address | ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: | eth0:0: | True | 192.168.0.11 | 255.255.255.0 | . | fa:16:3e:cc:06:c3 | ci-info: | eth1: | True | . | . | . | fa:16:3e:8a:1f:f4 | ci-info: | eth1: | True | . | . | d | fa:16:3e:8a:1f:f4 | ci-info: | eth2: | True | . | . | . | fa:16:3e:78:c2:39 | ci-info: | eth2: | True | . | . | d | fa:16:3e:78:c2:39 | ci-info: | eth0: | True | . | . | . | fa:16:3e:cc:06:c3 | ci-info: | eth0: | True | . | . | d | fa:16:3e:cc:06:c3 | ci-info: | eth3: | True | . | . | . | fa:16:3e:3b:76:55 | ci-info: | eth3: | True | . | . | d | fa:16:3e:3b:76:55 | ci-info: | lo: | True | 127.0.0.1 | 255.0.0.0 | . | . | ci-info: | lo: | True | . | . | d | . | ci-info: | eth2:0: | True | 10.0.0.106 | 255.255.255.0 | . | fa:16:3e:78:c2:39 | ci-info: +---------+------+--------------+---------------+-------+-------------------+ ci-info: ++++++++++++++++++++++++++++Route IPv4 info+++++++++++++++++++++++++++++ ci-info: +-------+-------------+------------+---------------+-----------+-------+ ci-info: | Route | Destination | Gateway | Genmask | Interface | Flags | ci-info: +-------+-------------+------------+---------------+-----------+-------+ ci-info: | 0 | 0.0.0.0 | 10.0.0.250 | 0.0.0.0 | eth2 | UG | ci-info: | 1 | 10.0.0.0 | 0.0.0.0 | 255.255.255.0 | eth2 | U | ci-info: | 2 | 192.168.0.0 | 0.0.0.0 | 255.255.255.0 | eth0 | U | ci-info: +-------+-------------+------------+---------------+-----------+-------+ 2017-04-21 16:59:34,937 - util.py[WARNING]: failed stage init failed run of stage init ------------------------------------------------------------ Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/cloudinit/cmd/main.py", line 513, in status_wrapper ret = functor(name, args) File "/usr/lib/python2.7/site-packages/cloudinit/cmd/main.py", line 269, in main_init init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL)) File "/usr/lib/python2.7/site-packages/cloudinit/stages.py", line 641, in apply_network_config return self.distro.apply_network_config(netcfg, bring_up=bring_up) File "/usr/lib/python2.7/site-packages/cloudinit/distros/__init__.py", line 150, in apply_network_config dev_names = self._write_network_config(netconfig) File "/usr/lib/python2.7/site-packages/cloudinit/distros/rhel.py", line 59, in _write_network_config ns = parse_net_config_data(netconfig) File "/usr/lib/python2.7/site-packages/cloudinit/net/network_state.py", line 32, in parse_net_config_data nsi.parse_config(skip_broken=skip_broken) File "/usr/lib/python2.7/site-packages/cloudinit/net/network_state.py", line 205, in parse_config handler(self, command) File "/usr/lib/python2.7/site-packages/cloudinit/net/network_state.py", line 78, in decorator return func(self, command, *args, **kwargs) File "/usr/lib/python2.7/site-packages/cloudinit/net/network_state.py", line 239, in handle_physical subnet['netmask'] = mask2cidr(subnet['netmask']) File "/usr/lib/python2.7/site-packages/cloudinit/net/network_state.py", line 439, in mask2cidr if ':' in mask: TypeError: argument of type 'int' is not iterable ------------------------------------------------------------ [{u'routes': [{u'netmask': u'0.0.0.0', u'network': u'0.0.0.0', u'gateway': u'192.168.0.1'}], u'netmask': u'255.255.255.0', u'type': 'static', 'ipv4': True, 'address': u'192.168.0.11'}, {u'routes': [{u'netmask': 0, u'network': u'::', u'gateway': u'2000:192:168::1'}], u'netmask': 64, 'ipv6': True, u'type': 'static', 'address': u'2000:192:168::5'}] [root@rhel2 ~]# Note that the netmask changed: u'ffff:ffff:ffff:ffff::', 'address': u'2000:192:168::5' vs u'netmask': 64, 'ipv6': True, u'type': 'static', 'address': u'2000:192:168::5'