Sample Debian/Ubuntu Interfaces File

/etc/network/interfaces

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0

auto eth0
iface eth0 inet static
address 208.85.x.x
netmask 255.255.255.x
gateway 208.85.x.x

auto eth0:1
iface eth0:1 inet static
address 208.85.x.x
netmask 255.255.255.x