[Bug 78043] Re: udev stops pppd persist working

[FrankAu]

The "post-stop" workaround is not effective in my situation.

I have documented the history so far in a forums thread (before
discovering this bug report) at ...

   http://ubuntuforums.org/showthread.php?t=1918431

FWICT a nuanced difference to other reports may be the means by which
pppd dies!  In my case it seems to self destruct and I am not yet
convinced any service (udev et al) is actually responding at all let
alone responding incorrectly.

As mentioned in the bug (just marked as duplicate) #824596 I am looking
to increase the logging levels to ascertain whom is doing what when.

First I have to bone up on Lucid upstart'isms being that I am somewhat
of a  Hardy curmudgeon.

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https://bugs.launchpad.net/bugs/78043

Title:
  udev stops pppd persist working

Status in “ifupdown” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: udev

  Product: Ubuntu Server
  Version: 6.10
  Component:udev
  Severity: High
  Priority: High
  URL: http://rants.atmurray.net/2007/01/pppd-persist-not-so-persist-with-udev.html
  Summary: udev stops pppd persist working
  Description:
  When a pppd session is disconnected it triggers the udev script /etc/udev/rules.d/85-ifupdown.rules to ifdown the ppp link which kills pppd and stopping a reconnection. 

  Steps to Reproduce:
  1) Create a persistent ppp connection and have it set to auto in /etc/network/interfaces
  2) Cause it to disconnect

  Actual Results: udev runs ifdown on the interface causing pppd to be sent the TERM signal
  Expected Results: As it is a ppp link udev should not touch it.
  Additional Builds and Platforms: 
  I believe this bug occurred and was fixed when hutplug was implemented.
  SUSE linux has fixed this bug by explicitly skipping the udev actions for some link types

  Additional Information:
  I suggest the following two lines in /etc/udev/rules.d/85-ifupdown.rules be changed accordingly:

  ACTION=="add", RUN+="/sbin/start-stop-daemon --start --background --pidfile /var/run/network/bogus --startas /sbin/ifup --allow=hotplug $env{INTERFACE}"
  ACTION=="remove", RUN+="/sbin/start-stop-daemon --start --background --pidfile /var/run/network/bogus --startas /sbin/ifdown --allow=hotplug $env{INTERFACE}"

  and then allow-hotplug be added to /etc/network/interfaces for
  interfaces to be controlled by udev.

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