±à¼­vi /etc/network/interfaces 

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 192.168.1.173
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
auto eth0:1
iface eth0:1 inet static
        address 192.168.2.173
        netmask 255.255.255.0
        network 192.168.2.0
        broadcast 192.168.1.255
        gateway 192.168.2.1
   # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 61.166.150.123