sysadmin@sf2-maas00:/etc/dhcp$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 78:2b:cb:56:45:a2 brd ff:ff:ff:ff:ff:ff
inet 10.5.100.250/24 brd 10.5.100.255 scope global em1
valid_lft forever preferred_lft forever
inet6 fe80::7a2b:cbff:fe56:45a2/64 scope link
valid_lft forever preferred_lft forever
3: em2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 78:2b:cb:56:45:a3 brd ff:ff:ff:ff:ff:ff
4: lxdbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether fe:55:75:16:41:9a brd ff:ff:ff:ff:ff:ff
inet 10.5.100.50/24 scope global lxdbr0
valid_lft forever preferred_lft forever
inet6 fe80::84ba:caff:feba:ff95/64 scope link
valid_lft forever preferred_lft forever
12: vethNL6O8E@if11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether fe:88:68:61:5d:72 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::fc88:68ff:fe61:5d72/64 scope link
valid_lft forever preferred_lft forever
16: vethGCKS0P@if15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether fe:55:75:16:41:9a brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::fc55:75ff:fe16:419a/64 scope link
valid_lft forever preferred_lft forever
sysadmin@sf2-maas00:/etc/dhcp$ cat /etc/network/interfaces
interfaces interfaces.d/
sysadmin@sf2-maas00:/etc/dhcp$ cat /etc/network/interfaces
interfaces interfaces.d/
sysadmin@sf2-maas00:/etc/dhcp$ cat /etc/network/interfaces.d/containerbr.cfg
auto containerbr
iface containerbr inet dhcp
bridge_ports em1
sysadmin@sf2-maas00:/etc/dhcp$