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 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether f0:de:f1:b0:bd:15 brd ff:ff:ff:ff:ff:ff
    inet 172.31.3.11/24 brd 172.31.3.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2001:470:8:64f:dcf5:dd0f:11f5:b6ed/64 scope global temporary dynamic 
       valid_lft 86278sec preferred_lft 14278sec
    inet6 2001:470:8:64f:f2de:f1ff:feb0:bd15/64 scope global dynamic 
       valid_lft 86278sec preferred_lft 14278sec
    inet6 fe80::f2de:f1ff:feb0:bd15/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 08:11:96:d6:e9:40 brd ff:ff:ff:ff:ff:ff
4: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default 
    link/ether 4e:16:eb:ec:65:b9 brd ff:ff:ff:ff:ff:ff
5: ovsbr0: <BROADCAST> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 7a:4e:2e:b5:53:4e brd ff:ff:ff:ff:ff:ff