Simple Gateway

Check interface status with ifconfig -a

$ ifconfig -a
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33208
        groups: lo
        inet 127.0.0.1 netmask 0xff000000
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        lladdr 00:50:da:21:e4:af
        groups: egress
        media: Ethernet autoselect (100baseTX full-duplex)
        status: active
        inet 213.187.179.198 netmask 0xfffffffc broadcast 213.187.179.199
        inet6 fe80::250:daff:fe21:e4af%xl0 prefixlen 64 scopeid 0x2
xl1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        lladdr 00:50:da:3f:b2:86
        media: Ethernet autoselect (100baseTX full-duplex)
        status: active
        inet 192.168.103.1 netmask 0xffffff00 broadcast 192.168.103.255
        inet6 fe80::250:daff:fe3f:b286%xl1 prefixlen 64 scopeid 0x3
enc0: flags=0<> mtu 1536
pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33208
        groups: pflog

(old-style, I know)