[Bug 1641373] Re: upgrade from 16.04 to 16.10 failed to calculate due to rdnssd

[Brian Murray]

>From aptlog.txt:

Broken systemd:amd64 Breaks on rdnssd [ amd64 ] < 1.0.1-1ubuntu2 -> 1.0.1-6ubuntu1 > ( universe/net ) (< 1.0.1-5)
  Considering rdnssd:amd64 0 as a solution to systemd:amd64 40
  Upgrading rdnssd:amd64 due to Breaks field in systemd:amd64
Investigating (9) rdnssd [ amd64 ] < 1.0.1-1ubuntu2 -> 1.0.1-6ubuntu1 > ( universe/net )
Broken rdnssd:amd64 Conflicts on network-manager [ amd64 ] < 1.2.2-0ubuntu0.16.04.3 -> 1.2.4-0ubuntu1 > ( net )
  Considering network-manager:amd64 5 as a solution to rdnssd:amd64 0
  MarkKeep rdnssd [ amd64 ] < 1.0.1-1ubuntu2 -> 1.0.1-6ubuntu1 > ( universe/net ) FU=0
  Holding Back rdnssd:amd64 rather than change network-manager:amd64
Done
Log time: 2016-11-12 20:11:39.586445

** Also affects: ndisc6 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Confirmed => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1641373

Title:
  upgrade from 16.04 to 16.10 failed to calculate due to rdnssd

Status in ndisc6 package in Ubuntu:
  New
Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged

Bug description:
  "This can be caused by:
  * Upgrading to a pre-release version of Ubuntu
  * Running the current pre-release version of Ubuntu
  * Unofficial software packages not provided by Ubuntu"

  None of this applies. I *did* have unofficial software packages when I
  first got this error, but I removed all of them, I believe (removed
  everything under "Obsolete ... Packages" in aptitude). Still getting
  the error.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.17
  ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
  Uname: Linux 4.4.0-47-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Sat Nov 12 20:12:11 2016
  InstallationDate: Installed on 2016-02-21 (265 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2016-11-13 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2016-08-21T21:46:34.658796

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