[Bug 890189] Re: `restart networking` does not deconfigure an interface

[Mark Schouten]

I agree that ifup/ifdown is more specific and preferable. However, in
this situation it's a script that arranges networking for Openpanel
(www.openpanel.com). Also, 'restart networking' would make sense if it
actually did restart it, and not only start interfaces. And, last but
not least. It's Ubuntu's decision to implement upstart, please do that
the right way without introducing regressions.

Wishlist is ok, for now. I guess. But it would be nice if this was fixed
in the new upcoming LTS.

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https://bugs.launchpad.net/bugs/890189

Title:
  `restart networking` does not deconfigure an interface

Status in “ifupdown” package in Ubuntu:
  Incomplete

Bug description:
  The old /etc/init.d/networking script deconfigured all the interfaces
  defined in /etc/network/interfaces. By running `/etc/init.d/networking
  restart`, one could make sure that all the old addresses and routes
  were removed. The replacementscript for upstart doesn't do anything to
  deconfigure an interface. So if you restart networking, a second
  default route can be added. Which isn't what you'd expect.

  Furthermore, the exitcode always seems to be '0', eventhough ifup
  presents errors.

  root at vps9124:/etc/init# /etc/init.d/networking restart
   * Reconfiguring network interfaces...                                                                                                                               SIOCADDRT: File exists
  Failed to bring up eth0.
                                                                                                                                                                [ OK ]
  root at vps9124:/etc/init# echo $?
  0

  root at vps9124:/etc/init# lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 10.04.3 LTS
  Release:	10.04
  Codename:	lucid

  
  IMHO, this is unexpected and unwanted behaviour..

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