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[Alexander <zukoff@xxxxxxxxx>]

bind9 and dnsmasq try to listen the same port on ipv6 (lxcbr0)
lxcbr0    Link encap:Ethernet  HWaddr xxx
          inet addr:10.0.3.1  Bcast:0.0.0.0  Mask:255.255.255.0
          inet6 addr: fe80::dc81:d8ff:feea:14b0/64 Scope:Link

tcp6       0      0 fe80::dc81:d8ff:feea:53 :::*
LISTEN      9988/dnsmasq

Problem is in bind9 itself, it occupy port before dnsmasq!
        listen-on-v6 { any; };

My solution was to strictly set ipv6 addresses that bind9 should use.

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https://bugs.launchpad.net/bugs/1367495

Title:
  Bridge still not created if bind9 is on

Status in lxc package in Ubuntu:
  Expired

Bug description:
  This is probably a dup of bug 1240757, created just so I could upload
  the data requested in that bug report.

  On a fresh, probably vanilla, ubuntu 14.04 server, I tried using ubuntu 14.04's default lxc.
  It created containers fine, but they failed to start, complaining
    lxc-start: failed to attach 'veth9HNUS9' to the bridge 'lxcbr0' : No such device
  /var/log/upstart/lxc-net.log says
    dnsmasq: failed to create listening socket for 10.0.3.1: Address already in use

  This didn't happen on a desktop 14.04 instance, where bind9 is not
  installed by default.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lxc 1.0.5-0ubuntu0.1
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  Date: Tue Sep  9 16:39:34 2014
  ProcEnviron:
   LANGUAGE=en_US:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: lxc
  UpgradeStatus: No upgrade log present (probably fresh install)
  defaults.conf:
   lxc.network.type = veth
   lxc.network.link = lxcbr0
   lxc.network.flags = up
   lxc.network.hwaddr = 00:16:3e:xx:xx:xx

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