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[Serge Hallyn <1458063@xxxxxxxxxxxxxxxxxx>]

So is this a duplicate of bug 1240757 ?

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Title:
  Vivid /usr/lib/x86_64-linux-gnu/lxc/lxc-net fails at boot time because
  named listening to UDP on LXC address

Status in lxc package in Ubuntu:
  New

Bug description:
  This is a clean Vivid install (rather than upgrade).

  Maybe I munged something + for the life of me nothing comes to mind.

  /var/log/syslog shows somehow bind is polluted with dnsmasq addresses?

  All packages updated.

  net8-rmt# lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 15.04
  Release:	15.04
  Codename:	vivid

  net8-rmt# uname -a
  Linux ns515383.ip-167-114-159.net 3.19.0-18-generic #18-Ubuntu SMP Tue May 19 18:31:35 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

  net8-rmt# pkg-list | egrep -e lxc -e cgroup
  cgroup-bin                          0.38-1ubuntu2
  cgroup-lite                         1.10
  libcgroup1                          0.38-1ubuntu2
  liblxc1                             1.1.2-0ubuntu3
  lxc                                 1.1.2-0ubuntu3
  lxc-templates                       1.1.2-0ubuntu3
  lxcfs                               0.7-0ubuntu4
  lxctl                               0.3.1+debian-3
  python3-lxc                         1.1.2-0ubuntu3

  Behavior is this.

  1) After reboot, lxcbr0 is missing

  2) /usr/lib/x86_64-linux-gnu/lxc/lxc-net restart

  reports 10.0.3.1 (set in /etc/default/lxc-net ) as being in use.

  3) netstat reports bind/named has the address, at least UDP, no TCP.

  4) /var/log/syslog from last boot shows this...

  net8-rmt# grep 10.0.3.1 /var/log/syslog
  May 22 16:03:01 ns515383 named[1355]: listening on IPv4 interface lxcbr0, 10.0.3.1#53
  May 22 16:03:02 ns515383 ntpd[1453]: Listen normally on 5 lxcbr0 10.0.3.1 UDP 123
  May 22 16:03:04 ns515383 lxc-net[1360]: dnsmasq: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:03:04 ns515383 dnsmasq[1768]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:03:06 ns515383 ntpd[1453]: Deleting interface #5 lxcbr0, 10.0.3.1#123, interface stats: received=0, sent=0, dropped=0, active_time=4 secs
  May 22 16:21:04 ns515383 dnsmasq[10991]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:21:30 ns515383 dnsmasq[11156]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:24:15 ns515383 dnsmasq[12092]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:25:36 ns515383 dnsmasq[12576]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:29:54 ns515383 dnsmasq[14015]: failed to create listening socket for 10.0.3.1: Address already in use
  May 22 16:34:55 ns515383 named[1355]: no longer listening on 10.0.3.1#53
  May 22 16:35:10 ns515383 ntpd[1453]: Listen normally on 9 lxcbr0 10.0.3.1 UDP 123
  May 22 16:35:26 ns515383 ntpd[1453]: Deleting interface #9 lxcbr0, 10.0.3.1#123, interface stats: received=0, sent=0, dropped=0, active_time=16 secs
  May 22 16:52:50 ns515383 ntpd[1453]: Listen normally on 11 lxcbr0 10.0.3.1 UDP 123

  5) Nothing in named config referencing the LXC IP.

  6) Then after server minutes, named stops listening to this address, at which time
  /usr/lib/x86_64-linux-gnu/lxc/lxc-net restart begins working as expected.

  7) If /usr/lib/x86_64-linux-gnu/lxc/lxc-net stop is issued + service bind9 restart issued,
  named no longer attempts to connect to 10.0.3.1 so all's well.

  Any suggestions on why named might be grabbing the LXC address at boot
  time are appreciated.

  I reported this as a bug, because none of the named config files reference the LXC IP address,
  so to me, named should never touch this address.

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