After-set-address-ifconfig

After-set-address-ifconfig

root@rpi [/root] # ifconfig urtwn0 inet 10.1.16.21/24             
root@rpi [/root] # ifconfig                                       
usmsc0: flags=0x8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
        ec_capabilities=1<VLAN_MTU>
        ec_enabled=0
        address: b8:27:eb:5e:22:6b
        media: Ethernet autoselect (100baseTX full-duplex)
        status: active
urtwn0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        ssid CMCC-WEB
        powersave off
        bssid 74:25:8a:92:98:53 chan 1
        address: e8:4e:06:1f:fc:6f
        media: IEEE802.11 autoselect (OFDM54 mode 11g)
        status: active
        inet6 fe80::ea4e:6ff:fe1f:fc6f%urtwn0 prefixlen 64 scopeid 0x2
        inet 10.1.16.21 netmask 0xffffff00 broadcast 10.1.16.255
lo0: flags=0x8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33192
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
        inet 127.0.0.1 netmask 0xff000000