[Bug 1061639] Re: Upstartification of /etc/init.d/networking has lost deconfiguring-networking event causing bad side-effects

[Tue Bækgaard Holm]

Finally found a workaround, Yotas fix (#21) seemed to work fine for the
time consumed shutting the system down, but i still got the bug.
Eventually I found out that it only happened when I was connected to a
network, so I made a small script which shuts down my network interfaces
when my computer shuts down, and this did the trick.

Simply put I created:  "/etc/init.d/nw.sh"

Containing: "ifconfig <interface> down" for all my physical network
interfaces.

Then as root:

ln /etc/init.d/nw.sh /etc/rc0.d/K10nw.sh
ln /etc/init.d/nw.sh /etc/rc6.d/K10nw.sh

And bam! My computer was suddenly able to shut down. Hopes this helps.

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https://bugs.launchpad.net/bugs/1061639

Title:
  Upstartification of /etc/init.d/networking has lost deconfiguring-
  networking event causing bad side-effects

Status in “ifupdown” package in Ubuntu:
  Fix Released
Status in “ifupdown” source package in Quantal:
  Fix Released

Bug description:
  In precise, /etc/init.d/networking was a true SysV service script that
  did the following:

  initctl emit deconfiguring-networking

  In quantal, /etc/init.d/networking is now using the upstart-job
  symlink back to the upstart job /etc/init/networking.conf.

  The problem is that the 'deconfiguring-networking' is no longer being
  emitted. This causes dbus to fail to stop on system shutdown which
  causes a cascading effect whereby other Upstart jobs are also not shut
  down. Eventually, the system halt with the message:

  mount: / is busy

  This results in a unclean shutdown which can result in FSCK being run
  / slow / bad user boot experience.

  The two main options here are:

  1) Re-instate the 'deconfiguring-networking' event.
  2) Change the dbus 'stop on' condition and update upstart-events.7 to remove 'deconfiguring-networking'.

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