before pppoe:

# ifconfig
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet6 fe80::20f:b0ff:fecf:a023%rl0 prefixlen 64 scopeid 0x1 
        ether 00:0f:b0:cf:a0:23
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 ::1 prefixlen 128 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 
        inet 127.0.0.1 netmask 0xff000000 
tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

after pppoe:

# ifconfig
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet6 fe80::20f:b0ff:fecf:a023%rl0 prefixlen 64 scopeid 0x1 
        ether 00:0f:b0:cf:a0:23
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 ::1 prefixlen 128 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 
        inet 127.0.0.1 netmask 0xff000000 
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1492
        inet 80.230.216.5 --> 213.8.255.155 netmask 0xffffffff 
        Opened by PID 1075