auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.1.154
netmask 255.255.255.0

auto eth0:1
iface eth0:1 inet static
address 192.168.2.154
netmask 255.255.255.0

gateway 192.168.1.1
dns-nameserver 192.168.1.1