I can't reproduce this :/ Steps I used: $ juju bootstrap maashw maashw --upload-tools --to node-21 $ juju switch controller $ juju deploy ubuntu --to lxd:0 $ juju ssh 0 -- 'cat /etc/network/interfaces' auto lo iface lo inet loopback dns-nameservers 10.14.0.1 dns-search maas auto eth0 iface eth0 inet manual mtu 1500 auto br-eth0 iface br-eth0 inet static address 10.14.1.121/20 gateway 10.14.0.1 bridge_ports eth0 auto eth1 iface eth1 inet manual mtu 1500 auto br-eth1 iface br-eth1 inet static address 10.14.2.121/20 bridge_ports eth1 auto eth0.100 iface eth0.100 inet manual mtu 1500 vlan-raw-device eth0 vlan_id 100 auto br-eth0.100 iface br-eth0.100 inet static address 10.100.1.121/20 bridge_ports eth0.100 dns-nameservers 10.100.0.1 auto eth0.150 iface eth0.150 inet manual mtu 1500 vlan-raw-device eth0 vlan_id 150 auto br-eth0.150 iface br-eth0.150 inet static address 10.150.1.121/20 bridge_ports eth0.150 auto eth0.50 iface eth0.50 inet manual mtu 1500 vlan-raw-device eth0 vlan_id 50 auto br-eth0.50 iface br-eth0.50 inet static address 10.50.1.121/20 bridge_ports eth0.50 auto eth1.200 iface eth1.200 inet manual mtu 1500 vlan-raw-device eth1 vlan_id 200 auto br-eth1.200 iface br-eth1.200 inet static address 10.200.1.121/20 bridge_ports eth1.200 auto eth1.250 iface eth1.250 inet manual mtu 1500 vlan-raw-device eth1 vlan_id 250 auto br-eth1.250 iface br-eth1.250 inet static address 10.250.1.121/20 bridge_ports eth1.250 dns-nameservers 10.250.0.1 auto eth1.30 iface eth1.30 inet manual mtu 1500 vlan-raw-device eth1 vlan_id 30 auto br-eth1.30 iface br-eth1.30 inet static address 10.30.1.121/20 bridge_ports eth1.30 source /etc/network/interfaces.d/*.cfg Connection to 10.14.1.121 closed. $ juju ssh 0 -- 'ifconfig -a' br-eth0 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet addr:10.14.1.121 Bcast:10.14.15.255 Mask:255.255.240.0 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:97006 errors:0 dropped:363 overruns:0 frame:0 TX packets:90006 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:237735369 (237.7 MB) TX bytes:7972787 (7.9 MB) br-eth1 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet addr:10.14.2.121 Bcast:10.14.15.255 Mask:255.255.240.0 inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:500 errors:0 dropped:360 overruns:0 frame:0 TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:26098 (26.0 KB) TX bytes:398 (398.0 B) br-eth0.50 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet addr:10.50.1.121 Bcast:10.50.15.255 Mask:255.255.240.0 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:82 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7922 (7.9 KB) TX bytes:15009 (15.0 KB) br-eth0.100 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet addr:10.100.1.121 Bcast:10.100.15.255 Mask:255.255.240.0 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1339 errors:0 dropped:0 overruns:0 frame:0 TX packets:1337 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:73152 (73.1 KB) TX bytes:20788533 (20.7 MB) br-eth0.150 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet addr:10.150.1.121 Bcast:10.150.15.255 Mask:255.255.240.0 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:79 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7035 (7.0 KB) TX bytes:10486 (10.4 KB) br-eth1.30 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet addr:10.30.1.121 Bcast:10.30.15.255 Mask:255.255.240.0 inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:78 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6979 (6.9 KB) TX bytes:10486 (10.4 KB) br-eth1.200 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet addr:10.200.1.121 Bcast:10.200.15.255 Mask:255.255.240.0 inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:79 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7035 (7.0 KB) TX bytes:10486 (10.4 KB) br-eth1.250 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet addr:10.250.1.121 Bcast:10.250.15.255 Mask:255.255.240.0 inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:514 errors:0 dropped:0 overruns:0 frame:0 TX packets:297 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:141402 (141.4 KB) TX bytes:51072 (51.0 KB) eth0 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:183877 errors:0 dropped:19 overruns:0 frame:0 TX packets:96168 errors:837 dropped:0 overruns:0 carrier:837 collisions:27317 txqueuelen:1000 RX bytes:262217190 (262.2 MB) TX bytes:8750430 (8.7 MB) Interrupt:20 Memory:f7c00000-f7c20000 eth1 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5046 errors:0 dropped:19 overruns:0 frame:0 TX packets:2467 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5782811 (5.7 MB) TX bytes:257752 (257.7 KB) eth0.50 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:613 (613.0 B) TX bytes:1986 (1.9 KB) eth0.100 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:739 (739.0 B) TX bytes:1986 (1.9 KB) eth0.150 Link encap:Ethernet HWaddr b8:ae:ed:78:17:67 inet6 addr: fe80::baae:edff:fe78:1767/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:739 (739.0 B) TX bytes:1986 (1.9 KB) eth1.30 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:739 (739.0 B) TX bytes:1986 (1.9 KB) eth1.200 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:739 (739.0 B) TX bytes:1986 (1.9 KB) eth1.250 Link encap:Ethernet HWaddr 00:e1:00:00:15:bc inet6 addr: fe80::2e1:ff:fe00:15bc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:739 (739.0 B) TX bytes:1986 (1.9 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:98072 errors:0 dropped:0 overruns:0 frame:0 TX packets:98072 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:87684645 (87.6 MB) TX bytes:87684645 (87.6 MB) lxdbr0 Link encap:Ethernet HWaddr 2e:9e:b6:0f:86:08 inet addr:10.0.0.1 Bcast:0.0.0.0 Mask:255.255.255.0 inet6 addr: fe80::2c9e:b6ff:fe0f:8608/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:570 (570.0 B) veth9SF2ON Link encap:Ethernet HWaddr fe:86:c5:3c:eb:74 inet6 addr: fe80::fc86:c5ff:fe3c:eb74/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1334 errors:0 dropped:0 overruns:0 frame:0 TX packets:1337 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:91089 (91.0 KB) TX bytes:20788533 (20.7 MB) vethB9REO3 Link encap:Ethernet HWaddr fe:e8:0f:ae:3b:d0 inet6 addr: fe80::fce8:fff:feae:3bd0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:74 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7332 (7.3 KB) TX bytes:10486 (10.4 KB) vethF4Q2WS Link encap:Ethernet HWaddr fe:7d:9a:06:8b:ea inet6 addr: fe80::fc7d:9aff:fe06:8bea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:244 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:648 (648.0 B) TX bytes:16280 (16.2 KB) vethJTUVIC Link encap:Ethernet HWaddr fe:19:14:0f:4b:2c inet6 addr: fe80::fc19:14ff:fe0f:4b2c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:73 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7262 (7.2 KB) TX bytes:10486 (10.4 KB) vethOHVR9T Link encap:Ethernet HWaddr fe:cf:23:a8:0e:cd inet6 addr: fe80::fccf:23ff:fea8:ecd/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:80 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8429 (8.4 KB) TX bytes:15009 (15.0 KB) vethOULT7W Link encap:Ethernet HWaddr fe:3c:e3:f0:7f:7b inet6 addr: fe80::fc3c:e3ff:fef0:7f7b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:74 errors:0 dropped:0 overruns:0 frame:0 TX packets:57 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7332 (7.3 KB) TX bytes:10486 (10.4 KB) vethVQUYMV Link encap:Ethernet HWaddr fe:d1:72:a0:bb:cd inet6 addr: fe80::fcd1:72ff:fea0:bbcd/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6514 errors:0 dropped:0 overruns:0 frame:0 TX packets:6810 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:589225 (589.2 KB) TX bytes:17256310 (17.2 MB) vethXQM9XF Link encap:Ethernet HWaddr fe:af:42:38:12:af inet6 addr: fe80::fcaf:42ff:fe38:12af/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:509 errors:0 dropped:0 overruns:0 frame:0 TX packets:297 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:147789 (147.7 KB) TX bytes:51072 (51.0 KB) Connection to 10.14.1.121 closed. $ juju ssh 0 -- 'sudo lxc list' Generating a client certificate. This may take a minute... If this is your first time using LXD, you should also run: sudo lxd init To start your first container, try: lxc launch ubuntu:16.04 +---------------------+---------+--------------------------------+------+------------+-----------+ | NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS | +---------------------+---------+--------------------------------+------+------------+-----------+ | juju-3fee09-0-lxd-0 | RUNNING | 10.14.0.100 (eth0) | | PERSISTENT | 0 | | | | 10.50.0.100 (eth1) | | | | | | | 10.14.0.101 (eth4) | | | | | | | 10.30.0.100 (eth5) | | | | | | | 10.100.0.100 (eth2) | | | | | | | 10.150.0.100 (eth3) | | | | | | | 10.200.0.100 (eth6) | | | | | | | 10.250.0.100 (eth7) | | | | +---------------------+---------+--------------------------------+------+------------+-----------+ Connection to 10.14.1.121 closed. $ juju ssh 0 -- 'sudo lxc exec juju-3fee09-0-lxd-0 -- cat /etc/network/interfaces' auto eth0 eth1 eth2 eth3 eth4 eth5 eth6 eth7 lo iface lo inet loopback dns-nameservers 10.100.0.1 10.14.0.1 10.250.0.1 dns-search maas iface eth0 inet static address 10.14.0.100/20 gateway 10.14.0.1 iface eth1 inet static address 10.50.0.100/20 iface eth2 inet static address 10.100.0.100/20 iface eth3 inet static address 10.150.0.100/20 iface eth4 inet static address 10.14.0.101/20 iface eth5 inet static address 10.30.0.100/20 iface eth6 inet static address 10.200.0.100/20 iface eth7 inet static address 10.250.0.100/20 Connection to 10.14.1.121 closed. What I did find though is the first time I run `sudo lxc list` on the node it wasn't showing more than 1 NIC up (eth0). After a few seconds, it worked as pasted above.