Public bug reported: After upgrading to Dapper my eth0 did not come back up on reboot. After some research, I found that I needed to make /etc/iftab have the physical MAC of the installed card (I had previously restored this machine from a backup, so the MAC in iftab did not match the physical address). I don't think this is a bug.
However, there were no errors reported in /var/syslog, dmesg, or printed to the terminal which made the debugging significantly more difficult. I believe this is a bug of sorts. ** Affects: Ubuntu Importance: Untriaged Status: Unconfirmed -- Dapper doesn't report iftab MAC address error https://launchpad.net/bugs/53936 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs