固定IPアドレスの設定

/etc/network/interfacesを編集

auto eth0
iface eth0 inet static
address 192.168.0.9
network 192.168.0.0
netmask 255.255.255.0
broadcast 192.168.0.255
gateway 192.168.0.254
dns-nameservers 192.168.0.254

$ sudo service networking restart