I don't think this has anything to do with the contents of /etc/network/interfaces, since ifup won't bother with devices that don't exist.
This is far more likely to be caused to the recent ifupdown update that adjusted the udev rules to try and stop it altering ppp devices, and has uncovered a udev bug. ** Changed in: netbase (Ubuntu) Status: Confirmed => Rejected ** Changed in: ifupdown (Ubuntu) Status: Rejected => Confirmed -- Feisty boot hangs on "Configuring network interfaces" https://bugs.launchpad.net/bugs/102675 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