sudo apt-get remove network-manager ;)
network/interfaces
auto lo iface lo inet loopback address 127.0.0.1 netmask 255.0.0.0
auto eth0 iface eth1 inet static address xxx.xxx.xxx.xxx netmask 255.255.255.0 gateway xxx.xxx.xxx.xxx broadcast xxx.xxx.xxx.xxx
sudo apt-get remove network-manager ;)
network/interfaces
auto lo
iface lo inet loopback
address 127.0.0.1
netmask 255.0.0.0
auto eth0
iface eth1 inet static
address xxx.xxx.xxx.xxx
netmask 255.255.255.0
gateway xxx.xxx.xxx.xxx
broadcast xxx.xxx.xxx.xxx