ifconfig -a output

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 16  bytes 1344 (1.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 16  bytes 1344 (1.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

sit0: flags=128<NOARP>  mtu 1480
        sit  txqueuelen 1000  (IPv6-in-IPv4)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.1.20  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::4225:c2ff:fe7b:574c  prefixlen 64  scopeid 0x20<link>
        ether 40:25:c2:7b:57:4c  txqueuelen 1000  (Ethernet)
        RX packets 35  bytes 3225 (3.1 KiB)
        RX errors 0  dropped 4  overruns 0  frame 0
        TX packets 10  bytes 1225 (1.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0