berlioz ~ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
       valid_lft forever preferred_lft forever
    inet 169.254.169.254/32 scope link lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br100 state UP group default qlen 1000
    link/ether 00:24:1d:8f:c2:92 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::224:1dff:fe8f:c292/64 scope link
       valid_lft forever preferred_lft forever
3: br100: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 00:24:1d:8f:c2:92 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.3/20 brd 192.168.15.255 scope global br100
       valid_lft forever preferred_lft forever
    inet 10.11.3.3/24 brd 10.11.3.255 scope global br100
       valid_lft forever preferred_lft forever
    inet6 fe80::224:1dff:fe8f:c292/64 scope link
       valid_lft forever preferred_lft forever
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether 56:84:7a:fe:97:99 brd ff:ff:ff:ff:ff:ff
    inet 172.17.42.1/16 scope global docker0
       valid_lft forever preferred_lft forever
12: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br100 state UNKNOWN group default qlen 500
    link/ether fe:16:3e:7f:a5:87 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc16:3eff:fe7f:a587/64 scope link
       valid_lft forever preferred_lft forever
berlioz ~ # brctl  show
bridge name     bridge id               STP enabled     interfaces
br100           8000.00241d8fc292       no              enp2s0
                                                        vnet0
docker0         8000.56847afe9799       no