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

** Changed in: network-manager (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1629620

Title:
  DNS resolver stops accepting queries

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  After a while / after resume from suspend, the system becomes unable
  to respond to DNS queries, with the following output for example:

  $ nslookup google.com 127.0.1.1
  Server:               127.0.1.1
  Address:      127.0.1.1#53

  ** server can't find google.com: REFUSED

  
  This is on an up to date yakkety install.  Changing resolv.conf to use 
8.8.8.8, or restarting network-manager appears to fix this, at least until it 
recurs again.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: network-manager 1.2.4-0ubuntu1
  ProcVersionSignature: Ubuntu 4.8.0-17.19-generic 4.8.0-rc7
  Uname: Linux 4.8.0-17-generic x86_64
  ApportVersion: 2.20.3-0ubuntu7
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Oct  1 21:28:51 2016
  EcryptfsInUse: Yes
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-08-21 (407 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150819)
  IpRoute:
   default via 192.168.1.1 dev wlp3s0  proto static  metric 600 
   169.254.0.0/16 dev docker0  scope link  metric 1000 linkdown 
   172.17.0.0/16 dev docker0  proto kernel  scope link  src 172.17.0.1 linkdown 
   192.168.1.0/24 dev wlp3s0  proto kernel  scope link  src 192.168.1.5  metric 
600
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to yakkety on 2016-09-29 (2 days ago)
  nmcli-dev:
   DEVICE             TYPE      STATE         DBUS-PATH                         
         CONNECTION   CON-UUID                              CON-PATH            
                               
   docker0            bridge    connected     
/org/freedesktop/NetworkManager/Devices/1  docker0      
63f0b05b-f699-4a68-81ce-f62d2c1a247d  
/org/freedesktop/NetworkManager/ActiveConnection/0 
   wlp3s0             wifi      connected     
/org/freedesktop/NetworkManager/Devices/4  HOME-1622-5  
6df3f2f0-fb86-43b5-802a-d59bc5734be3  
/org/freedesktop/NetworkManager/ActiveConnection/2 
   24:DA:9B:B9:09:0E  bt        disconnected  
/org/freedesktop/NetworkManager/Devices/3  --           --                      
              --                                                 
   lo                 loopback  unmanaged     
/org/freedesktop/NetworkManager/Devices/2  --           --                      
              --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.2.4    connected  started  full          enabled     enabled  
enabled  enabled  enabled

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