voip:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:A0:C9:E1:63:B7
          inet addr:60.234.68.5  Bcast:60.234.68.31  Mask:255.255.255.224
          inet6 addr: 2001:4428:207::2/126 Scope:Global
          inet6 addr: fe80::2a0:c9ff:fee1:63b7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST DYNAMIC  MTU:1500  Metric:1
          RX packets:193419528 errors:0 dropped:0 overruns:0 frame:1
          TX packets:247760345 errors:0 dropped:0 overruns:0 carrier:1185
          collisions:3243 txqueuelen:1000
          RX bytes:4286431893 (3.9 GiB)  TX bytes:384254032 (366.4 MiB)
          Interrupt:11


interface FastEthernet1/0.10
 description VPN IP
 encapsulation dot1Q 10
 ip address 60.234.68.2 255.255.255.224
 ip nat outside
 ip virtual-reassembly
 ipv6 address 2001:4428:207::1:1/126