$ ip a s
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
4: teredo: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1280 qdisc pfifo_fast qlen 500
    link/[65534] 
    inet6 2001:0:53aa:64c:2c43:7fff:ad1a:6a65/32 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::ffff:ffff:ffff/64 scope link 
       valid_lft forever preferred_lft forever
9: lan: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:15:c5:ab:f6:4d brd ff:ff:ff:ff:ff:ff
10: wifi: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:13:02:d3:8b:19 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.2/24 brd 192.168.0.255 scope global wifi
    inet6 fe80::213:2ff:fed3:8b19/64 scope link 
       valid_lft forever preferred_lft forever