interfaces

/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
allow-hotplug eth0
iface eth0 inet static
        address 192.168.0.11
        netmask 255.255.255.0
        gateway 192.168.0.254

# This is an autoconfigured IPv6 interface
#iface eth0 inet6 static
#       address 2a01:e35:242d:1bb0:21c:7eff:fe7d:6ab3
#       netmask 64
#       gateway fe80::207:cbff:fecc:28af