Not an ifupdown bug, seems more like a debconf bug even though ifupdown doesn't actually use debconf.
** Changed in: ifupdown (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/623452 Title: package ifupdown 0.6.8ubuntu29.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/623452/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs