in red hat so dove andare main debian no :-(
vi /etc/network/interfaces/
auto eth0
iface eth0 inet static
address xxx.xxx.xxx.xxx
netmask xxx.xxx.xxx.xxx
network xxx.xxx.xxx.0
broadcast xxx.xxx.xxx.255
gateway xxx.xxx.xxx.xxx
:wq
/etc/init.d/networking restart
et voila'