port_DUS: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 21.0.1.1  netmask 255.255.255.0  broadcast 21.0.1.255
        inet6 fe80::249f:deff:fe78:6e78  prefixlen 64  scopeid 0x20<link>
        ether 26:9f:de:78:6e:78  txqueuelen 1000  (Ethernet)
        RX packets 37  bytes 3282 (3.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 40  bytes 3740 (3.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0