1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    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
2: rename2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
    link/ether 78:ac:c0:cb:e6:c1 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether ac:81:12:42:85:71 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.6/24 brd 192.168.2.255 scope global eth1
    inet6 fe80::ae81:12ff:fe42:8571/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever