virtual ip addressing

You can use the virtual IP address either within the same IP address range or on a different one. To add a virtual IP address, add where is a number after the name of the network interface. For example, ifconfig eth0:0 10.0.0.10 adds the address 10.0.0.10 as a virtual IP address to eth0 . The number after the colon must be unique, so you can add a second virtual IP address with ifconfig eth0:1 10.0.0.20 , and so on.