[iproute2]. Configuración de red. Muestra dispositivos, enrutamientos, tuneles.
$ ip addr
$ ip route show
$ ip link show
$ ip link set dev eth0 down
$ ip route add default via 192.168.1.1
$ ip link set dev eth0 up
$ ip addr add 192.168.1.20 255.255.255.0 dev eth1
$ ip addr del 192.168.1.55/24 dev eth0
$ ip n
$ ip link set dev eth1 address 00:03:44:88:00:11
$ ip route del default
$ ip route add default via 192.168.1.10
$ ip route add 192.168.1.53 via 192.168.0.33
$ ip route add 192.168.1.0/24 via 192.168.0.33
$ ip -f inet addr show eth0
$ ip route add 192.168.2.0/24 via 192.168.1.10
Nota.- Verificar que /etc/resolv contenga una linea con el servidor DNS tipo: nameserver 8.8.8.8 [para las DNS de google] o la 127.0.0.1