You must create an alias for ethernet card.
To create an alias for eth0 you must use ifconfig command. It is use to configure a network interface and aliases.
Example: assuming that your eth0 IP is 10.160.1.10 and you would like to create an alias eth0:1 with IP 10.160.1.11
Open a terminal, and type the following commands:
sudo su
ifconfig eth0:0 10.160.1.11 up
Your ethernet configuration is located in a file called /etc/network/interfaces.
If you reboot system you will lost your alias.
To make it permanent you need to add it network configuration file:
sudo su
nano /etc/network/interfaces
Append the following configuration:
auto eth0:1
iface eth0:1 inet static
address 10.160.1.11
netmask 255.255.255.0
broadcast 10.160.1.255
network 10.160.1.0
Control + O, save file. Control + X, close nano.
Note: If you want more network aliases, use eth0:2, eth0:3, eth0:4, etc.(max upto 254)