ip addr
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: em1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 68:05:ca:23:1e:63 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 68:05:ca:20:99:84 brd ff:ff:ff:ff:ff:ff
    inet 10.1.10.3/24 brd 10.1.10.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::6a05:caff:fe20:9984/64 scope link
       valid_lft forever preferred_lft forever