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[Martin Pitt <martin.pitt@xxxxxxxxxx>]

I'm not exactly proud of that entire shell hack, but so close to vivid's
release I believe this is safer than entirely reenginering the ifupdown
integration. Fixed package uploaded to the vivid review queue.

This is on the list of cleanups to do for Debian jessie+1, which will
drop the shell waiting entirely.

** Changed in: ifupdown (Ubuntu Vivid)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1442828

Title:
  ifup-wait-all-auto does not wait for interfaces to be fully up

Status in ifupdown package in Ubuntu:
  Fix Committed
Status in ifupdown source package in Vivid:
  Fix Committed

Bug description:
  
  The change to ifup@.service done as part of LP 1425376 appears to break the ordering of units marked as "After=network-online.target".  In my specific case, a new service script with "After=network-online.target" is erroneously run concurrently with dhclient.  As the new script depends on networking configuration being complete, it fails as the IP addresses and routes from DHCP are not configured.  This functioned correctly on vivid daily images from a few days ago, and appears to break starting with the vivid daily from approximately 0409.

  Infinity suggested this change as a likely suspect:

  diff -Nru systemd-219/debian/extra/units/ifup@.service systemd-219/debian/extra/units/ifup@.service
  --- systemd-219/debian/extra/units/ifup@.service	2015-04-02 08:08:56.000000000 +0000
  +++ systemd-219/debian/extra/units/ifup@.service	2015-04-07 14:38:38.000000000 +0000
  @@ -6,10 +6,8 @@
   DefaultDependencies=no
   
   [Service]
  -Type=oneshot
  -ExecStart=/sbin/ifup --allow=hotplug %I
  -ExecStartPost=/sbin/ifup --allow=auto %I
   # only fail if ifupdown knows about the iface AND it's not up
  -ExecStartPost=/bin/sh -c 'if ifquery %I >/dev/null; then ifquery --state %I >/dev/null; fi'
  +ExecStart=/bin/sh -ec 'ifup --allow=hotplug %I; ifup --allow=auto %I; \
  +    if ifquery %I >/dev/null; then ifquery --state %I >/dev/null; fi'
   ExecStop=/sbin/ifdown %I
   RemainAfterExit=true

  and, indeed, reverting this (copying ifup@.service from a few-days old
  vivid image to a current image) resolves the problem.

  The affected version is  ubuntu-vivid-daily-amd64-server-20150409.2
  (installed via AWS).

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