# ip a
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:23:ef:de brd ff:ff:ff:ff:ff:ff
    inet 172.28.38.112/20 brd 172.28.47.255 scope global eth0