[Bug 1725840] Re: resolvconf not correctly configured after update from 17.04 to 17.10

[Daniel]

Hello,

Was just bitten by this as well.  etc/resolv.conf was pointing at
127.0.1.1.

hydrogen at Bliss:~$ ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 33 May 24  2016 /etc/resolv.conf -> ../run/NetworkManager/resolv.conf


hydrogen at Bliss:~$ dpkg -S /etc/NetworkManager/
network-manager, network-manager-vpnc: /etc/NetworkManager


Fixed by moving symlink, but let me know if I can provide any additional information.

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Title:
  resolvconf not correctly configured after update from 17.04 to 17.10

Status in resolvconf package in Ubuntu:
  Confirmed

Bug description:
  After having updated my laptop from Ubuntu 17.04 to 17.10, the DNS
  lookup on my wireless network connection did not work any more.

  As it seems, the file /etc/resolv.conf was static and contained wrong
  data assigned by the NetworkManager. When I changed the file content
  manually to

    nameserver 127.0.0.53

  DNS lookup worked fine. After reboot, however, I had to repeat this
  operation since NetworkManager seems to have replaced the file
  content.

  Finally, I found a solution. Running

  sudo dpkg-reconfigure resolvconf

  the file /etc/resolv.conf was replaced by the link

  /etc/resolv.conf -> ../run/resolvconf/resolv.conf

  Now, the wireless network seems to work properly.

  Hence, there must be some kind of bug during the update process from
  Ubuntu 17.04 to 17.10 that impedes resolvconf to be configured
  properly.

  Best regards,

  Artur

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: resolvconf 1.79ubuntu8
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Oct 21 23:17:38 2017
  InstallationDate: Installed on 2013-10-18 (1463 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: resolvconf
  UpgradeStatus: Upgraded to artful on 2017-10-19 (1 days ago)

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