Comment 85 for bug 259214

I found a simple work around that simply avoids NetworkManager without removing it. I have not tried the workaround indicated above of deleting the auto eth0 configuration from Networkmanager's connections list and creating a new static configuration. In my case, eth0 is treated as "unmanaged" by NetworkManager. I've not read all of the posts in this thread so this may be a duplicate comment.

I just installed 8.10_amd64 as a clean install on a system previously running 8.04.1, and I also encountered this bug. I used a static configuration during installation from the 8.10 alternate amd64 installation CD. The configuration was written to /etc/network/interfaces in the newly installed system. While the IP address and default route of eth0, as reported by ifconfig and route -a, appear correct, no information for name servers is entered into /etc/resolv.conf. Pinging my gateway using its IP address works. Firefox returns a "Page Load Error" due to "Address Not Found".

Manually entering name server IP addresses into /etc/resolv.conf, or installing the package resolvconf, works around the difficulty. NetworkManager indicates there is no network connection (the "!" symbol is displayed by the applet) but so far all network functions are fine.