PC1 :
$ cat /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 eth1
iface eth1 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
auto eth0
iface eth0 inet static
address 192.168.10.1
netmask 255.255.255.0
# gateway 192.168.1.1
-----------------------------------------
PC2 :
$ cat /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 192.167.1.2
netmask 255.255.255.0
# gateway 192.168.1.1