# The loopback network interface
auto lo eth0 eth1 eth1:1
iface lo inet loopback

iface eth0 inet static
  address 192.168.1.11
  netmask 255.255.255.0
  broadcast 192.168.1.255
  gateway 192.168.1.1

iface eth1 inet static
  address 10.0.0.100
  netmask 255.0.0.0
  broadcast 10.1.1.255

iface eth1:1 inet static
  address 172.16.0.0 
  netmask 255.255.255.0
  broadcast 172.16.0.255