eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.21.16  netmask 255.255.0.0  broadcast 192.168.255.255
        ether 52:54:00:7f:21:4d  txqueuelen 1000  (Ethernet)
        RX packets 614125695  bytes 884757004967 (823.9 GiB)
        RX errors 0  dropped 163494  overruns 0  frame 0
        TX packets 98303320  bytes 13347735632 (12.4 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 122874  bytes 162861980 (155.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 122874  bytes 162861980 (155.3 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

