If you need to configure more network aliases, you can use the following commands:
vi /etc/network/interfaces
Add the following lines:
auto eth0:0
iface eth0:0 inet static
name Ethernet alias LAN card
address 192.168.1.101
netmask 255.255.255.0
broadcast 192.168.1.255
network 192.168.1.0
Restart the network service:
/etc/init.d/networking restart
Now your machine will response also to 192.168.0.101.
You can use up to 254 aliases for one interface: eth0:1, eth0:2, eth0:N.