What's intended to happen in this case is network-manger manages the interfaces and so commenting them out is by design. What appears not to have happened is then Network manager didn't restart them correctly. As we discussed on IRC this is at best an unusual use case (I actually think it's unsupported).
Can you replicate the network manager failure when upgrading in a more normal manner? ** Changed in: update-manager-core (Ubuntu) Status: New => Incomplete -- do-release-upgrade to gutsy disables eth0 https://bugs.launchpad.net/bugs/151169 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs