Public bug reported:

Since upgrading to yakkety my network sometimes stops working - it might
be related to suspending the laptop. The NetworkManager-managed caching
dnsmasq just stops resolving at some point:

 dig google.com @127.0.1.1

; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 22521
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.                    IN      A

;; Query time: 0 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Sat Oct 29 09:12:33 CEST 2016
;; MSG SIZE  rcvd: 28


Networking and upstream DNS are fine:

 dig google.com @8.8.8.8

; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63345
;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;google.com.                    IN      A

;; ANSWER SECTION:
google.com.             299     IN      A       46.134.208.30
[...]

;; Query time: 43 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sat Oct 29 09:12:31 CEST 2016
;; MSG SIZE  rcvd: 295


Killing it resolves the issue, dnsmasq gets restarted and works again:

 ps aux | grep dnsmasq
nobody    4262  0.0  0.0  54308  2740 ?        S    01:30   0:00 
/usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces 
--pid-file=/var/run/NetworkManager/dnsmasq.pid --listen-address=127.0.1.1 
--cache-size=0 --conf-file=/dev/null --proxy-dnssec 
--enable-dbus=org.freedesktop.NetworkManager.dnsmasq 
--conf-dir=/etc/NetworkManager/dnsmasq.d
 sudo kill 4262
 dig google.com @127.0.1.1

; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58324
;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;google.com.                    IN      A

;; ANSWER SECTION:
google.com.             299     IN      A       46.134.208.59
[...]

;; Query time: 41 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Sat Oct 29 09:12:54 CEST 2016
;; MSG SIZE  rcvd: 295

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: dnsmasq (not installed)
ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
Uname: Linux 4.8.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Oct 29 09:13:04 2016
InstallationDate: Installed on 2016-05-06 (175 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: dnsmasq
UpgradeStatus: No upgrade log present (probably fresh install)
--- 
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.10
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-05-06 (175 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=false
 WWANEnabled=true
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
Package: network-manager 1.2.4-0ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
Tags: yakkety third-party-packages
Uname: Linux 4.8.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip libvirt libvirtd lpadmin lxd plugdev 
sambashare sbuild sudo vboxusers
_MarkForUpload: True
modified.conffile..etc.polkit-1.localauthority.50-local.d.org.freedesktop.NetworkManager.pkla:
 [deleted]
nmcli-nm:
 RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  WIFI  
    WWAN-HW  WWAN    
 running  1.2.4    connected  started  full          enabled     enabled  
disabled  enabled  enabled

** Affects: dnsmasq (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug apport-collected third-party-packages yakkety

** Tags added: apport-collected third-party-packages

** Description changed:

  Since upgrading to yakkety my network sometimes stops working - it might
  be related to suspending the laptop. The NetworkManager-managed caching
  dnsmasq just stops resolving at some point:
  
   dig google.com @127.0.1.1
  
  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 22521
  ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
  
  ;; QUESTION SECTION:
  ;google.com.                    IN      A
  
  ;; Query time: 0 msec
  ;; SERVER: 127.0.1.1#53(127.0.1.1)
  ;; WHEN: Sat Oct 29 09:12:33 CEST 2016
  ;; MSG SIZE  rcvd: 28
  
  
  Networking and upstream DNS are fine:
  
   dig google.com @8.8.8.8
  
  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @8.8.8.8
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63345
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1
  
  ;; OPT PSEUDOSECTION:
  ; EDNS: version: 0, flags:; udp: 512
  ;; QUESTION SECTION:
  ;google.com.                    IN      A
  
  ;; ANSWER SECTION:
  google.com.             299     IN      A       46.134.208.30
  [...]
  
  ;; Query time: 43 msec
  ;; SERVER: 8.8.8.8#53(8.8.8.8)
  ;; WHEN: Sat Oct 29 09:12:31 CEST 2016
  ;; MSG SIZE  rcvd: 295
  
  
  Killing it resolves the issue, dnsmasq gets restarted and works again:
  
   ps aux | grep dnsmasq
  nobody    4262  0.0  0.0  54308  2740 ?        S    01:30   0:00 
/usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces 
--pid-file=/var/run/NetworkManager/dnsmasq.pid --listen-address=127.0.1.1 
--cache-size=0 --conf-file=/dev/null --proxy-dnssec 
--enable-dbus=org.freedesktop.NetworkManager.dnsmasq 
--conf-dir=/etc/NetworkManager/dnsmasq.d
   sudo kill 4262
   dig google.com @127.0.1.1
  
  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58324
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1
  
  ;; OPT PSEUDOSECTION:
  ; EDNS: version: 0, flags:; udp: 512
  ;; QUESTION SECTION:
  ;google.com.                    IN      A
  
  ;; ANSWER SECTION:
  google.com.             299     IN      A       46.134.208.59
  [...]
  
  ;; Query time: 41 msec
  ;; SERVER: 127.0.1.1#53(127.0.1.1)
  ;; WHEN: Sat Oct 29 09:12:54 CEST 2016
  ;; MSG SIZE  rcvd: 295
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: dnsmasq (not installed)
  ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
  Uname: Linux 4.8.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Oct 29 09:13:04 2016
  InstallationDate: Installed on 2016-05-06 (175 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  SourcePackage: dnsmasq
  UpgradeStatus: No upgrade log present (probably fresh install)
+ --- 
+ ApportVersion: 2.20.3-0ubuntu8
+ Architecture: amd64
+ CurrentDesktop: Unity
+ DistroRelease: Ubuntu 16.10
+ IfupdownConfig:
+  # interfaces(5) file used by ifup(8) and ifdown(8)
+  auto lo
+  iface lo inet loopback
+ InstallationDate: Installed on 2016-05-06 (175 days ago)
+ InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
+ NetworkManager.state:
+  [main]
+  NetworkingEnabled=true
+  WirelessEnabled=false
+  WWANEnabled=true
+ NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
+ Package: network-manager 1.2.4-0ubuntu1
+ PackageArchitecture: amd64
+ ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
+ Tags: yakkety third-party-packages
+ Uname: Linux 4.8.0-26-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dialout dip libvirt libvirtd lpadmin lxd plugdev 
sambashare sbuild sudo vboxusers
+ _MarkForUpload: True
+ 
modified.conffile..etc.polkit-1.localauthority.50-local.d.org.freedesktop.NetworkManager.pkla:
 [deleted]
+ nmcli-nm:
+  RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI      WWAN-HW  WWAN    
+  running  1.2.4    connected  started  full          enabled     enabled  
disabled  enabled  enabled

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dnsmasq in Ubuntu.
https://bugs.launchpad.net/bugs/1637700

Title:
  Caching dnsmasq stops resolving after some time

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

Bug description:
  Since upgrading to yakkety my network sometimes stops working - it
  might be related to suspending the laptop. The NetworkManager-managed
  caching dnsmasq just stops resolving at some point:

   dig google.com @127.0.1.1

  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 22521
  ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

  ;; QUESTION SECTION:
  ;google.com.                    IN      A

  ;; Query time: 0 msec
  ;; SERVER: 127.0.1.1#53(127.0.1.1)
  ;; WHEN: Sat Oct 29 09:12:33 CEST 2016
  ;; MSG SIZE  rcvd: 28

  
  Networking and upstream DNS are fine:

   dig google.com @8.8.8.8

  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @8.8.8.8
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63345
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1

  ;; OPT PSEUDOSECTION:
  ; EDNS: version: 0, flags:; udp: 512
  ;; QUESTION SECTION:
  ;google.com.                    IN      A

  ;; ANSWER SECTION:
  google.com.             299     IN      A       46.134.208.30
  [...]

  ;; Query time: 43 msec
  ;; SERVER: 8.8.8.8#53(8.8.8.8)
  ;; WHEN: Sat Oct 29 09:12:31 CEST 2016
  ;; MSG SIZE  rcvd: 295

  
  Killing it resolves the issue, dnsmasq gets restarted and works again:

   ps aux | grep dnsmasq
  nobody    4262  0.0  0.0  54308  2740 ?        S    01:30   0:00 
/usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces 
--pid-file=/var/run/NetworkManager/dnsmasq.pid --listen-address=127.0.1.1 
--cache-size=0 --conf-file=/dev/null --proxy-dnssec 
--enable-dbus=org.freedesktop.NetworkManager.dnsmasq 
--conf-dir=/etc/NetworkManager/dnsmasq.d
   sudo kill 4262
   dig google.com @127.0.1.1

  ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com @127.0.1.1
  ;; global options: +cmd
  ;; Got answer:
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58324
  ;; flags: qr rd ra; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1

  ;; OPT PSEUDOSECTION:
  ; EDNS: version: 0, flags:; udp: 512
  ;; QUESTION SECTION:
  ;google.com.                    IN      A

  ;; ANSWER SECTION:
  google.com.             299     IN      A       46.134.208.59
  [...]

  ;; Query time: 41 msec
  ;; SERVER: 127.0.1.1#53(127.0.1.1)
  ;; WHEN: Sat Oct 29 09:12:54 CEST 2016
  ;; MSG SIZE  rcvd: 295

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: dnsmasq (not installed)
  ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
  Uname: Linux 4.8.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Oct 29 09:13:04 2016
  InstallationDate: Installed on 2016-05-06 (175 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  SourcePackage: dnsmasq
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.10
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-05-06 (175 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=false
   WWANEnabled=true
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  Package: network-manager 1.2.4-0ubuntu1
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
  Tags: yakkety third-party-packages
  Uname: Linux 4.8.0-26-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip libvirt libvirtd lpadmin lxd plugdev 
sambashare sbuild sudo vboxusers
  _MarkForUpload: True
  
modified.conffile..etc.polkit-1.localauthority.50-local.d.org.freedesktop.NetworkManager.pkla:
 [deleted]
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI      WWAN-HW  WWAN    
   running  1.2.4    connected  started  full          enabled     enabled  
disabled  enabled  enabled

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