[Bug 1568787] Re: resolveconf does not reliable receive nameserver information from network manager

[sourcepower]

- i can confirm the issue
- the DNS resolution was OK before i installed the last updates today
- how can i reproduce the issue:
-> 2 Network devices setup in Network Manager (LAN, not used; WLAN, used)
-> boot the system
-> WLAN will automatically connect to the WLAN network
-> /etc/resolv.conf (/run/resolvconf/resolv.conf) contains only "nameserver 127.0.1.1" as nameserver entry
- Workaround:
-> manually reconnect to WLAN network
-> /etc/resolv.conf (/run/resolvconf/resolv.conf) contains the configured nameserver
- i installed the following updates today

Start-Date: 2016-04-12  18:17:36
Commandline: apt-get upgrade
Requested-By: steven (1000)
Upgrade: libnm-glib4:amd64 (1.0.4-0ubuntu10, 1.1.93-0ubuntu2), libdevmapper1.02.1:amd64 (2:1.02.110-1ubuntu8, 2:1.02.110-1ubuntu9), liblvm2cmd2.02:amd64 (2.02.133-1ubuntu8, 2.02.133-1ubuntu9), dmsetup:amd64 (2:1.02.110-1ubuntu8, 2:1.02.110-1ubuntu9), language-pack-gnome-de:amd64 (1:16.04+20160403, 1:16.04+20160410), language-pack-gnome-en:amd64 (1:16.04+20160403, 1:16.04+20160410), irqbalance:amd64 (1.1.0-2, 1.1.0-2ubuntu1), python3-mako:amd64 (1.0.3+ds1-1, 1.0.3+ds1-1ubuntu1), appstream:amd64 (0.9.2-0ubuntu1, 0.9.3-1), libopencv-imgproc2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libopencv-objdetect2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libpulsedsp:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), pulseaudio:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), libopencv-video2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libdevmapper-event1.02.1:amd64 (2:1.02.110-1ubuntu8, 2:1.02.110-1ubuntu9), ubuntu-standard:amd64 (1.356, 1.357), ubuntu-desktop:amd64 (1.356, 1.357), dmeventd:amd64 (2:1.02.110-1ubuntu8, 2:1.02.110-1ubuntu9), libnm-glib-vpn1:amd64 (1.0.4-0ubuntu10, 1.1.93-0ubuntu2), lvm2:amd64 (2.02.133-1ubuntu8, 2.02.133-1ubuntu9), libnm0:amd64 (1.0.4-0ubuntu10, 1.1.93-0ubuntu2), alsa-utils:amd64 (1.1.0-0ubuntu2, 1.1.0-0ubuntu3), language-pack-de:amd64 (1:16.04+20160403, 1:16.04+20160410), language-pack-en:amd64 (1:16.04+20160403, 1:16.04+20160410), network-manager:amd64 (1.0.4-0ubuntu10, 1.1.93-0ubuntu2), gcc-6-base:amd64 (6-20160405-0ubuntu1, 6-20160405-0ubuntu2), gcc-6-base:i386 (6-20160405-0ubuntu1, 6-20160405-0ubuntu2), rsyslog:amd64 (8.16.0-1ubuntu2, 8.16.0-1ubuntu3), libopencv-flann2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libopencv-contrib2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libopencv-highgui2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libgcc1:amd64 (1:6-20160405-0ubuntu1, 1:6-20160405-0ubuntu2), libgcc1:i386 (1:6-20160405-0ubuntu1, 1:6-20160405-0ubuntu2), libnm-util2:amd64 (1.0.4-0ubuntu10, 1.1.93-0ubuntu2), libspectre1:amd64 (0.2.7-3ubuntu1, 0.2.7-3ubuntu2), ubuntu-minimal:amd64 (1.356, 1.357), libpulse0:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), liblvm2app2.2:amd64 (2.02.133-1ubuntu8, 2.02.133-1ubuntu9), libpulse-mainloop-glib0:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), libopencv-calib3d2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libopencv-legacy2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), pulseaudio-module-x11:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), libopencv-core2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), pulseaudio-module-bluetooth:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3), libopencv-ml2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), libappstream3:amd64 (0.9.2-0ubuntu1, 0.9.3-1), libopencv-features2d2.4v5:amd64 (2.4.9.1+dfsg-1.3ubuntu1, 2.4.9.1+dfsg-1.5ubuntu1), pulseaudio-utils:amd64 (1:8.0-0ubuntu2, 1:8.0-0ubuntu3)
End-Date: 2016-04-12  18:18:00

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https://bugs.launchpad.net/bugs/1568787

Title:
  resolveconf does not reliable receive nameserver information from
  network manager

Status in dbus package in Ubuntu:
  New
Status in dnsmasq package in Ubuntu:
  New
Status in network-manager package in Ubuntu:
  New

Bug description:
  resolveconf does not reliable receive nameserver information from
  network manager.

  In the journal I see things like:

  Apr 11 11:13:52 ottawa dnsmasq[3122]: setting upstream servers from DBus
  Apr 11 11:13:52 ottawa dnsmasq[3122]: using nameserver fe80::1#53
  Apr 11 11:13:52 ottawa dnsmasq[3122]: using nameserver 192.168.1.254#53
  Apr 11 11:13:52 ottawa dbus[978]: [system] Rejected send message, 13 matched rules; type="method_return", sender=":1.99" (uid=0 pid=3122 comm="/usr/sbin/dnsmasq --no-resolv --keep-in-foreground") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.8" (uid=0 pid=1017 comm="/usr/sbin/NetworkManager --no-daemon ")

  Apr 11 11:04:21 ottawa NetworkManager[1017]: <info>  DNS: starting dnsmasq...
  Apr 11 11:04:21 ottawa NetworkManager[1017]: <warn>  dnsmasq not available on the bus, can't update servers.
  Apr 11 11:04:21 ottawa NetworkManager[1017]: <error> [1460369061.825658] [dns-manager/nm-dns-dnsmasq.c:387] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name

  
  Doing this via dbus seems really odd, but I suspect messages between NetworkManager and the dnsmasq it spawns should not be rejected.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dnsmasq-base 2.75-1
  ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
  Uname: Linux 4.4.0-18-generic x86_64
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Apr 11 11:17:34 2016
  InstallationDate: Installed on 2016-01-26 (76 days ago)
  InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160125)
  SourcePackage: dnsmasq
  UpgradeStatus: No upgrade log present (probably fresh install)

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