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[Sergio Durigan Junior <1531184@xxxxxxxxxxxxxxxxxx>]

Xenial has reached end of standard support.

** Changed in: dnsmasq (Ubuntu Xenial)
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/1531184

Title:
  [SRU] dnsmasq doesn't start on boot because its interface isn't up yet

Status in One Hundred Papercuts:
  Confirmed
Status in dnsmasq package in Ubuntu:
  Confirmed
Status in dnsmasq source package in Xenial:
  Won't Fix
Status in dnsmasq source package in Bionic:
  Confirmed
Status in dnsmasq package in Debian:
  New

Bug description:
  [Impact]
  dnsmasq will fail to respond on network devices that weren't up when its
  service started, thus not binding as expected.

  [Test Case]
  TBD

  [Regression Potential]
  The fix is just configuring the order of service startup, so is unlikely to create any regressions.  Things to watch would be service related misbehaviors and general availability of the dnsmasq functionality.

  [Fix]
  Straightforward packaging fix to the service to make it delay startup
  until after the network is online.

  https://bugs.debian.org/cgi-
  bin/bugreport.cgi?att=1;bug=774970;filename=774970-network-
  online.debdiff;msg=22

  [Discussion]

  [Original Report]
  My dnsmasq instance uses "interface=br-vz0" and the interface br-vz0 is managed manually in /etc/network/interfaces.

  During boot, dnsmasq is started before br-vz0 is created and this
  causes dnsmasq to exit:

  Jan  5 08:56:16 simon-laptop dnsmasq[1008]: dnsmasq: unknown interface br-vz0
  Jan  5 08:56:16 simon-laptop dnsmasq[1008]: unknown interface br-vz0
  Jan  5 08:56:16 simon-laptop dnsmasq[1008]: FAILED to start up
  Jan  5 08:56:17 simon-laptop NetworkManager[937]: <info>  NetworkManager (version 1.0.4) is starting...
  ...
  Jan  5 08:56:18 simon-laptop NetworkManager[937]: <info>        interface-parser: parsing file /etc/network/interfaces
  ...
  Jan  5 08:56:18 simon-laptop NetworkManager[937]: <info>  found bridge ports none for br-vz0
  Jan  5 08:56:18 simon-laptop NetworkManager[937]: <info>  adding bridge port none to eni_ifaces
  Jan  5 08:56:18 simon-laptop NetworkManager[937]: <info>  management mode: unmanaged

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dnsmasq 2.75-1
  ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
  Uname: Linux 4.3.0-5-generic x86_64
  ApportVersion: 2.19.3-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Jan  5 09:53:30 2016
  PackageArchitecture: all
  SourcePackage: dnsmasq
  UpgradeStatus: No upgrade log present (probably fresh install)

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