matt@kalliope:~$ cat /etc/network/interfaces 
auto lo
iface lo inet loopback
iface eth0 inet dhcp
iface eth1 inet dhcp
wireless-essid belkin54g
auto eth2
iface eth2 inet dhcp
auto ath0
iface ath0 inet dhcp
auto wlan0
iface wlan0 inet dhcp
iface ppp0 inet ppp
provider ppp0
auto eth1