ifconfig eth0:1 192.168.1.1 netmask 255.255.255.0
auto eth0:1iface eth0:1 inet static address 192.168.1.1 netmask 255.255.255.0
auto eth0iface eth0 inet static address 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 auto eth0:1iface eth0:1 inet static address 192.168.2.1 netmask 255.255.255.0 network 192.168.2.0 broadcast 192.168.2.255