[Bug 1586528] Re: Avahi-daemon withdraws address record

[ghomem]

This is happening on 16.0.4 LTS with ethernet connected PCs. Relevant
logs:

May 15 00:58:28 shuttle01 dhclient[1203]: DHCPREQUEST of 192.168.1.89 on enp2s0 to 192.168.1.3 port 67 (xid=0x218cacc0)
May 15 00:58:28 shuttle01 dhclient[1203]: DHCPACK of 192.168.1.89 from 192.168.1.3
May 15 00:58:28 shuttle01 dhclient[1203]: bound to 192.168.1.89 -- renewal in 29125 seconds.
May 15 01:17:01 shuttle01 CRON[24411]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
May 15 01:39:44 shuttle01 avahi-daemon[893]: Withdrawing address record for 192.168.1.89 on enp2s0.
May 15 01:39:44 shuttle01 avahi-daemon[893]: Leaving mDNS multicast group on interface enp2s0.IPv4 with address 192.168.1.89.
May 15 01:39:44 shuttle01 avahi-daemon[893]: Interface enp2s0.IPv4 no longer relevant for mDNS.
May 15 01:39:44 shuttle01 whoopsie[1467]: [01:39:44] Cannot reach: https://daisy.ubuntu.com
May 15 01:39:44 shuttle01 whoopsie[1467]: [01:39:44] offline

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https://bugs.launchpad.net/bugs/1586528

Title:
  Avahi-daemon withdraws address record

Status in avahi package in Ubuntu:
  Invalid
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  For some reason, if I leave my Ubuntu VM up for a prolonged period of
  time the machine will lose connection to the network.  ip addr shows
  that the nic port no longer has an address and an examination of the
  syslog shows this:

  May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Withdrawing address record for 10.0.2.15 on enp0s3.
  May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Leaving mDNS multicast group on interface enp0s3.IPv4 with address 10.0.2.15.
  May 27 14:19:38 matt-VirtualBox avahi-daemon[590]: Interface enp0s3.IPv4 no longer relevant for mDNS.

  
  for no known reason.

  The only reliable way to get the network to come back (that I have
  found) is a full reboot.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: avahi-daemon 0.6.32~rc+dfsg-1ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri May 27 15:11:34 2016
  InstallationDate: Installed on 2015-10-22 (218 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: avahi
  UpgradeStatus: Upgraded to xenial on 2016-03-30 (58 days ago)

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