My
/etc/network/interfaces file consists of:# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.2.5
netmask 255.255.255.0
gateway 192.168.2.1
network 192.168.2.0
broadcast 192.168.2.255
dns-nameservers 192.168.2.1 8.8.8.8