I've had Ubuntu 12.04 on a server for the last several months, with everything working fine. Last night I did an
aptitude update && aptitude safe-upgrade to bring in all the latest security changes, and now when I boot the server no lo device is created.
It brings up the physical ethernet interfaces correctly, and I can ping in and out of the machine on those interfaces, but nothing can connect to anything on either
ifconfig lists only
lo at all.
Here are the contents of /etc/network/interfaces:
# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 #NetworkManager#iface eth0 inet dhcp
Where should I be looking to diagnose and fix?