[Bug 1759150] [NEW] systemd stopped resolving after back from suspend

Pablo Catalina pablo.catalina at gmail.com
Tue Mar 27 07:44:40 UTC 2018 

Public bug reported:

I noted it after back from suspend, but could happens on other
conditions:

systemd-resolved stopped resolving.

<code>
$ host google.com 127.0.0.53
Using domain server:
Name: 127.0.0.53
Address: 127.0.0.53#53
Aliases:

Host google.com not found: 2(SERVFAIL)
</code>

But resolved service is active without problems.
<pre>
● systemd-resolved.service - Network Name Resolution
   Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2018-03-27 09:27:46 CEST; 11min ago
     Docs: man:systemd-resolved.service(8)
           https://www.freedesktop.org/wiki/Software/systemd/resolved
           https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
           https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
 Main PID: 11822 (systemd-resolve)
   Status: "Processing requests..."
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/systemd-resolved.service
           └─11822 /lib/systemd/systemd-resolved

Mar 27 09:28:01 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:28:06 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:28:42 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:29:07 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:29:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:30:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:30:32 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:30:37 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:38:10 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
Mar 27 09:38:15 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
</pre>

I checked the network traffic:
<pre>
09:38:15.476106 IP 10.66.57.54.48901 > 127.0.0.53.53: 7013+ A? google.com. (28)
09:38:15.476205 IP 127.0.0.53.53 > 127.0.0.1.48901: 7013 ServFail [0q] 0/0/0 (12)
</pre>

And resolv service works fine:
<pre>
$ systemd-resolve google.com
google.com: 216.58.214.174

-- Information acquired via protocol DNS in 7.2ms.
-- Data is authenticated: no
</pre>

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: systemd 234-2ubuntu12.3
ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
Uname: Linux 4.13.0-37-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 27 09:34:21 2018
InstallationDate: Installed on 2018-02-16 (38 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
MachineType: Apple Inc. MacBookPro11,4
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-37-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/08/2017
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP114.88Z.0177.B00.1708080033
dmi.board.name: Mac-06F11FD93F0323C5
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro11,4
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-06F11FD93F0323C5
dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0177.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5:
dmi.product.family: MacBook Pro
dmi.product.name: MacBookPro11,4
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

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


** Tags: amd64 apport-bug artful

** Description changed:

  I noted it after back from suspend, but could happens on other
  conditions:
  
  systemd-resolved stopped resolving.
  
- 
- <pre>
+ <code>
  $ host google.com 127.0.0.53
  Using domain server:
  Name: 127.0.0.53
  Address: 127.0.0.53#53
- Aliases: 
+ Aliases:
  
  Host google.com not found: 2(SERVFAIL)
- </pre>
+ </code>
  
  But resolved service is active without problems.
  <pre>
  ● systemd-resolved.service - Network Name Resolution
-    Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
-    Active: active (running) since Tue 2018-03-27 09:27:46 CEST; 11min ago
-      Docs: man:systemd-resolved.service(8)
-            https://www.freedesktop.org/wiki/Software/systemd/resolved
-            https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
-            https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
-  Main PID: 11822 (systemd-resolve)
-    Status: "Processing requests..."
-     Tasks: 1 (limit: 4915)
-    CGroup: /system.slice/systemd-resolved.service
-            └─11822 /lib/systemd/systemd-resolved
+    Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
+    Active: active (running) since Tue 2018-03-27 09:27:46 CEST; 11min ago
+      Docs: man:systemd-resolved.service(8)
+            https://www.freedesktop.org/wiki/Software/systemd/resolved
+            https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
+            https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
+  Main PID: 11822 (systemd-resolve)
+    Status: "Processing requests..."
+     Tasks: 1 (limit: 4915)
+    CGroup: /system.slice/systemd-resolved.service
+            └─11822 /lib/systemd/systemd-resolved
  
  Mar 27 09:28:01 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:28:06 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:28:42 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:29:07 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:29:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:32 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:37 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:38:10 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:38:15 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  </pre>
  
  I checked the network traffic:
  <pre>
  09:38:15.476106 IP 10.66.57.54.48901 > 127.0.0.53.53: 7013+ A? google.com. (28)
  09:38:15.476205 IP 127.0.0.53.53 > 127.0.0.1.48901: 7013 ServFail [0q] 0/0/0 (12)
  </pre>
  
  And resolv service works fine:
  <pre>
  $ systemd-resolve google.com
  google.com: 216.58.214.174
  
  -- Information acquired via protocol DNS in 7.2ms.
  -- Data is authenticated: no
  </pre>
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: systemd 234-2ubuntu12.3
  ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
  Uname: Linux 4.13.0-37-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Mar 27 09:34:21 2018
  InstallationDate: Installed on 2018-02-16 (38 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  MachineType: Apple Inc. MacBookPro11,4
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-37-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/08/2017
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP114.88Z.0177.B00.1708080033
  dmi.board.name: Mac-06F11FD93F0323C5
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,4
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-06F11FD93F0323C5
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0177.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5:
  dmi.product.family: MacBook Pro
  dmi.product.name: MacBookPro11,4
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

-- 
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https://bugs.launchpad.net/bugs/1759150

Title:
  systemd stopped resolving after back from suspend

Status in systemd package in Ubuntu:
  New

Bug description:
  I noted it after back from suspend, but could happens on other
  conditions:

  systemd-resolved stopped resolving.

  <code>
  $ host google.com 127.0.0.53
  Using domain server:
  Name: 127.0.0.53
  Address: 127.0.0.53#53
  Aliases:

  Host google.com not found: 2(SERVFAIL)
  </code>

  But resolved service is active without problems.
  <pre>
  ● systemd-resolved.service - Network Name Resolution
     Loaded: loaded (/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2018-03-27 09:27:46 CEST; 11min ago
       Docs: man:systemd-resolved.service(8)
             https://www.freedesktop.org/wiki/Software/systemd/resolved
             https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
             https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
   Main PID: 11822 (systemd-resolve)
     Status: "Processing requests..."
      Tasks: 1 (limit: 4915)
     CGroup: /system.slice/systemd-resolved.service
             └─11822 /lib/systemd/systemd-resolved

  Mar 27 09:28:01 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:28:06 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:28:42 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:29:07 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:29:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:11 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:32 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:30:37 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:38:10 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  Mar 27 09:38:15 myhostname systemd-resolved[11822]: Got packet on unexpected IP range, refusing.
  </pre>

  I checked the network traffic:
  <pre>
  09:38:15.476106 IP 10.66.57.54.48901 > 127.0.0.53.53: 7013+ A? google.com. (28)
  09:38:15.476205 IP 127.0.0.53.53 > 127.0.0.1.48901: 7013 ServFail [0q] 0/0/0 (12)
  </pre>

  And resolv service works fine:
  <pre>
  $ systemd-resolve google.com
  google.com: 216.58.214.174

  -- Information acquired via protocol DNS in 7.2ms.
  -- Data is authenticated: no
  </pre>

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: systemd 234-2ubuntu12.3
  ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
  Uname: Linux 4.13.0-37-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Mar 27 09:34:21 2018
  InstallationDate: Installed on 2018-02-16 (38 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  MachineType: Apple Inc. MacBookPro11,4
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-37-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/08/2017
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP114.88Z.0177.B00.1708080033
  dmi.board.name: Mac-06F11FD93F0323C5
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,4
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-06F11FD93F0323C5
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0177.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5:
  dmi.product.family: MacBook Pro
  dmi.product.name: MacBookPro11,4
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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