host: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 21.101.0.2  netmask 255.255.255.0  broadcast 21.101.0.255
        inet6 fe80::e447:76ff:fea9:442  prefixlen 64  scopeid 0x20<link>
        ether e6:47:76:a9:04:42  txqueuelen 1000  (Ethernet)
        RX packets 14  bytes 1076 (1.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 23  bytes 1882 (1.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0