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[Launchpad Bug Tracker <1639776@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package dnsmasq - 2.76-4ubuntu0.1

---------------
dnsmasq (2.76-4ubuntu0.1) yakkety; urgency=medium

  * Add two upstream patches to fix binding to an interface being
    destroyed and recreated. LP: #1639776.
      + 2675f2061525bc954be14988d64384b74aa7bf8b
      + 16800ea072dd0cdf14d951c4bb8d2808b3dfe53d

 -- Nishanth Aravamudan <nish.aravamudan@xxxxxxxxxxxxx>  Tue, 28 Mar
2017 10:36:48 -0700

** Changed in: dnsmasq (Ubuntu Yakkety)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1639776

Title:
  name resolution (dnsmasq) fails to send queries out after
  suspend/resume reconnects the interface

Status in dnsmasq package in Ubuntu:
  Fix Released
Status in network-manager package in Ubuntu:
  Invalid
Status in dnsmasq source package in Xenial:
  Fix Released
Status in network-manager source package in Xenial:
  Invalid
Status in dnsmasq source package in Yakkety:
  Fix Released
Status in network-manager source package in Yakkety:
  Invalid
Status in dnsmasq package in Debian:
  Fix Released

Bug description:
  [Impact]

   * suspend/resume (which involves disconnection of network devices)
  leads to dnsmasq failures.

  [Test Case]

   * suspend/resume on 16.04 or 16.10 when using dnsmasq, and see
  failures upon resume.

  [Regression Potential]

   * The fix was NMU'd in Debian in the version immediately after
  16.10's. I believe the regression potential is very low as this is a
  clear bug-fix from upstream.

  ---

  Failure is caused by ENODEV return for all dns queries like:
  sendto(11, "\232\325\1\0\0\1\0\0\0\0\0\0\4mail\6google\3com\0\0\1\0"..., 33, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("62.241.198.245")}, 16) = -1 ENODEV (No such device)

  Problem is reported and fixed:
  https://bugzilla.redhat.com/show_bug.cgi?id=1367772

  http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=2675f2061525bc954be14988d64384b74aa7bf8b

  I didn't yet test if applying that patch to ubuntu package works. I
  will try the patch in a few hours.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: dnsmasq-base 2.76-4
  ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
  Uname: Linux 4.8.0-26-generic x86_64
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Nov  7 14:11:51 2016
  InstallationDate: Installed on 2037-12-25 (-7718 days ago)
  InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: dnsmasq
  UpgradeStatus: Upgraded to yakkety on 2016-10-21 (16 days ago)

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