[Bug 1176710] Re: avahi-daemon script holds up run-parts in the if-up.d directory

[Alderian]

I had the same problem and I edited
/etc/NetworkManager/dispatcher.d/01ifupdown to execute run-parts in
backgound. I'm supposing that scripts should be indipendent and can run
in any order. This way, I prevent any other script to block and timeout.

in  /etc/NetworkManager/dispatcher.d/01ifupdown

...
   up|vpn-up)
        export MODE="start"
        export PHASE="post-up"
        exec run-parts /etc/network/if-up.d &
        ;;
    down|vpn-down)
        export MODE="stop"
        export PHASE="post-down"
        exec run-parts /etc/network/if-post-down.d &
        ;;
...

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https://bugs.launchpad.net/bugs/1176710

Title:
  avahi-daemon script holds up run-parts in the if-up.d directory

Status in “avahi” package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  I hope this is the right forum, or product, to report this issue I
  found on a fresh Kubuntu 13.04 install.

  I'm using the networkmanager to handle networking, and everything is
  running with default settings. I noticed that executing the
  /usr/lib/avahi/avahi-daemon-check-dns.sh script takes quite a bit of
  time to complete. I have persistent wired network, so the avahi-daemon
  script in /etc/network/if-up.d directory tries to execute this when I
  start up my computer.

  Apart from a prolonged startup time, my real problem was that none of
  the scripts, which are alphabetically after avahi-daemon were
  executed, because networkmanager has a timeout of some sort on
  starting up the network - which eventually always kicked in.

  My solution was to simply run the mentioned script in the background, so I modified the avahi-daemon script as follows:
  exec /usr/lib/avahi/avahi-daemon-check-dns.sh &

  This fixed the problem, but at this stage I'm not sure if I introduced
  any other:)

  Thank you,
  David

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