# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255

auto eth1
iface eth1 inet static
       address 201.12.35.51
       netmask 255.255.255.240
       network 201.12.35.49
       broadcast 201.12.35.255

auto eth1:1
       address 201.12.35.52
       netmask 255.255.255.240
       network 201.12.35.49
       broadcast 201.12.35.255

auto eth1:2
       address 201.12.35.54
       netmask 255.255.255.240
       network 201.12.35.49
       broadcast 21.12.25.255

auto eth2
iface eth2 inet static
      address 200.204.198.213
      netmask 255.255.255.0
      network 200.204.198.0
      broadcast 200.204.198.255