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[Bug 998388] Re: emit net-device-down signal when network-manager deconfigures interface

 

2015 the bug is still there in Ubuntu 14.04.3.

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https://bugs.launchpad.net/bugs/998388

Title:
  emit net-device-down signal when network-manager deconfigures
  interface

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  I want to execute a script when network (any interface) goes up and
  when goes down (with parameters).

  I've found easy to trigger first part with

      start on (net-device-up IFACE!=lo)

  but didn't manage to found an easy way to trigger either net-device-
  down, net-device-remove(d) , deconfiguring-networking

  my job loks like this:

  ##################################################################
  description	"network test"

  start on (net-device-up IFACE!=lo)
  # stop on ((net-device-down IFACE!=lo) or deconfiguring-networking)
  stop on net-device-removed IFACE!=lo

  pre-start exec /opt/test.sh start "$UPSTART_JOB - EVENT:
  $UPSTART_EVENTS"

  post-stop exec /opt/test.sh stop "$UPSTART_JOB - EVENT:
  $UPSTART_STOP_EVENTS"

  ##################################################################

  to test it I just go to nm-applet and deactivate one interface.

  I've finally managed to make it work creating a simple script in
  '/etc/network/if-post-down.d' to force emmiting the signal. something
  like this:

  ########################################
  #!/bin/sh

  [ "$IFACE" != "lo" ] || exit 0

  initctl emit -n net-device-removed IFACE=$IFACE

  ########################################

  I'm not sure if this is expecte behaviour, if this is a feature
  request or if it's a real bug, but for company pourposes I really need
  to emit a signal when any interface (not lo) goes down.

  please, ask for further info

  EDITED: I can see here

  https://lists.ubuntu.com/archives/upstart-
  devel/2011-January/001379.html

  that '/etc/network/if-down.d/upstart' should emit net-device-down but
  in my case that's not true. so maybe the bug should be:

  event not emited by '/etc/network/if-down.d/upstart'

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