eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.21.30  netmask 255.255.0.0  broadcast 192.168.255.255
        ether 52:54:00:a6:05:7f  txqueuelen 1000  (Ethernet)
        RX packets 612337501  bytes 882186154393 (821.5 GiB)
        RX errors 0  dropped 204188  overruns 0  frame 0
        TX packets 97685486  bytes 13296847210 (12.3 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 122454  bytes 162840641 (155.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 122454  bytes 162840641 (155.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

