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ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    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 qlen 1000
    link/ether 00:1c:42:e6:31:fb brd ff:ff:ff:ff:ff:ff
    inet 10.211.55.21/24 brd 10.211.55.255 scope global dynamic eth0
       valid_lft 1330sec preferred_lft 1330sec
    inet6 fdb2:2c26:f4e4:0:21c:42ff:fee6:31fb/64 scope global noprefixroute dynamic 
       valid_lft 2591964sec preferred_lft 604764sec
    inet6 fe80::21c:42ff:fee6:31fb
 
/64 scope link 
       valid_lft forever preferred_lft forever

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