auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


auto eth2
iface eth2 inet dhcp

auto ath0
iface ath0 inet dhcp
        hwaddress ether 00:16:D4:38:FF:F2

auto wlan0
iface wlan0 inet dhcp



#ifconfig output

ath0      Link encap:Ethernet  HWaddr 00:20:A6:58:0D:F4  
          inet6 addr: fe80::220:a6ff:fe58:df4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:226 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:17272 (16.8 KiB)  TX bytes:140 (140.0 b)

eth0      Link encap:Ethernet  HWaddr 00:16:D4:38:FF:F2  
          inet addr:65.18.108.46  Bcast:65.18.109.255  Mask:255.255.254.0
          inet6 addr: fe80::216:d4ff:fe38:fff2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:29906 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14986 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:18787089 (17.9 MiB)  TX bytes:2080755 (1.9 MiB)
          Interrupt:233 Base address:0x4400 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:93 errors:0 dropped:0 overruns:0 frame:0
          TX packets:93 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:7421 (7.2 KiB)  TX bytes:7421 (7.2 KiB)

wifi0     Link encap:UNSPEC  HWaddr 00-20-A6-58-0D-F4-00-00-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13642 errors:0 dropped:0 overruns:0 frame:55
          TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:199 
          RX bytes:1134814 (1.0 MiB)  TX bytes:2043 (1.9 KiB)
          Interrupt:177 Memory:f8dc0000-f8dd0000