upgrade from 16.04 to 16.10 failed to calculate due to rdnssd

[Steven Collins]

"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

[Steven Collins (stevencollins)]

After digging around some related bugs and from there poking around /var/log/dist-upgrade, I concluded that it was getting stuck on rdnssd, which I wasn't really using anyway. I removed it, and have at least so far gotten past this error.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[YAEGASHI Takeshi (yaegashi)]

I've just encountered the same problem. Removing rdnssd solved it.

[Brian Murray (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

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[MasterCATZ (mastercatz)]

Simular thing for me

16.04 to 16.10 went kindof ok
( networking stopped working and a few other misc things broken )

but now the final step from 16.10 - 17.04 is bringing this error