Mine
public text v1 · immutableubuntu@ubuntu:~$ ls -l /etc/network/interfaces
-rw-r--r-- 1 root root 194 2008-07-07 15:24 /etc/network/interfaces
ubuntu@ubuntu:~$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet dhcp
auto eth2
iface eth2 inet dhcp
auto ath0
iface ath0 inet dhcp
auto wlan0
iface wlan0 inet dhcp