[Bug 1639776] Re: dnsmasq fails to send queries out after suspend disconnects the interface

[Nish Aravamudan]

** Description changed:

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

Title:
  dnsmasq fails to send queries out after suspend disconnects the
  interface

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