I guess you both haven't read the documentation. In ifupdown mode, guessnet expects /etc/network/interfaces to be fed on its stdin. That's why you think it hangs — as you haven't supplied any input to it.
** Bug watch added: Debian Bug tracker #704224 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704224 ** Also affects: guessnet (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704224 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/363961 Title: Guessnet hangs on attempting to run with ifupdown mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/guessnet/+bug/363961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs