desde hace unas semanas dejo de funcionar dejo config e network/interfaces
<br># This file describes the network interfaces available on your system <br># and how to activate them. For more information, see interfaces(5).<br/>
<br>#The loopback network interface <br>#auto lo eth0 eth1 <br>#iface lo inet loopback
<br>#the primary network interface <br>#iface eth0 inet dhcp <br>#address 10.1.9.40 <br>#netmask 255.255.0.0 <br>#gateway 10.1.0.19 <br>post-up iptables-restore < /etc/iptables.up.rules
<br>#iface eth1 inet static <br>addres 172.16.0.1 <br>netmask 255.255.0.0 <br>broadcast 172.16.255.255 <br>network 172.16.0.0