ip-ajustes
1.- Estática
# gedit /etc/network/interfaces
auto eth0
iface eth0 inet static
address 192.168.x.x
netmask 255.255.255.0
network 192.168.x.0
boadcast 192.168.2.255
gateway 192.168.x.1
# /etc/init.d/networking restart
reiniciar el servicio
$ ip a
verificar la nueva ip