1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 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 15: eth0@if16: mtu 1450 qdisc noqueue state UP group default qlen 1000 link/ether 00:16:3e:af:31:e9 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 252.30.178.128/8 metric 100 brd 252.255.255.255 scope global dynamic eth0 valid_lft 3264sec preferred_lft 3264sec inet6 fe80::216:3eff:feaf:31e9/64 scope link valid_lft forever preferred_lft forever