ifconfig eth0:1 192.168.1.3 netmask 255.255.255.0
ifconfig eth0:2 192.168.1.4 netmask 255.255.255.0
ifconfig eth0:3 192.168.1.5 netmask 255.255.255.0
ifconfig eth0:4 192.168.1.6 netmask 255.255.255.0
vs vs vs..

şeklinde gidebilirsin ayrıca.