[Bug 1230056] Re: ifdown waiting for 10 seconds before finishing in /etc/init/networking.conf during shutdown

[Serhiy Zahoriya]

It's something from avahi-daemon.
apt-get purge avahi-daemon solves the issue and reinstalling it makes it appear again.

** No longer affects: sysvinit (Ubuntu)

** No longer affects: upstart (Ubuntu)

** Also affects: avahi (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1230056

Title:
  /etc/network/if-post-down.d/avahi-daemon is a symbolic link to `../if-
  up.d/avahi-daemon'

Status in “avahi” package in Ubuntu:
  New

Bug description:
  With current situation avahi-daemon starts when it needs to stop, causing ifdown to wait additional 10 seconds during shutdown. Please remove the 
  /etc/network/if-post-down.d/avahi-daemon link from the package.

  Quick workaround:
  $ sudo rm /etc/network/if-post-down.d/avahi-daemon

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