If I upgrade ifupdown by `sudo apt-get install ifupdown` first and then upgrade the whole system by `sudo apt-get dist-upgrade`, there is no problem at all.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1452238 Title: Failed to upgrade system from 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ifupdown/+bug/1452238/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
