lo:unknown interface

[Nick]

hello,   I recently upgrade from potato to unstable and ran into some difficulties w/ my network interfaces.   I remeber something being mentioned before on the list about this.   when i try to restart my network ie: /etc/init.d/networking restart I get the following message SIOCSIFADDR: Bad file desriptor lo: unknown interface: Bad file descriptor   I have the following in my interface file: auto lo iface lo inet loopback   auto eth0 iface eth0 inet dhcp   have anyone experienced this before and if so, how did you restart the network properly?    Thanks for any insight.   Nick