[Bug 1690099] [NEW] systemd-resolved and Samba 4 INTERNAL_DNS

[Robert Sander]

Public bug reported:

Ubuntu 17.04 desktop in a network with Samba 4 AD DC and its internal
DNS server and resolver.

Messages like the following in the log:

May 11 10:47:04 rabi systemd-resolved[1614]: Grace period over, resuming full feature set (UDP+EDNS0+DO+LARGE) for DNS server 192.168.48.2.
May 11 10:54:33 rabi systemd-resolved[1614]: Using degraded feature set (UDP) for DNS server 192.168.48.2.

It looks like this upstream issue:
https://github.com/systemd/systemd/issues/5352

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: systemd 232-21ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
Date: Thu May 11 10:54:09 2017
MachineType: Dell Inc. Precision Tower 7910
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=/dev/mapper/system-root ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to zesty on 2017-05-11 (0 days ago)
dmi.bios.date: 02/28/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 0NK5PH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd02/28/2017:svnDellInc.:pnPrecisionTower7910:pvr:rvnDellInc.:rn0NK5PH:rvrA00:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision Tower 7910
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-bug zesty

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https://bugs.launchpad.net/bugs/1690099

Title:
  systemd-resolved and Samba 4 INTERNAL_DNS

Status in systemd package in Ubuntu:
  New

Bug description:
  Ubuntu 17.04 desktop in a network with Samba 4 AD DC and its internal
  DNS server and resolver.

  Messages like the following in the log:

  May 11 10:47:04 rabi systemd-resolved[1614]: Grace period over, resuming full feature set (UDP+EDNS0+DO+LARGE) for DNS server 192.168.48.2.
  May 11 10:54:33 rabi systemd-resolved[1614]: Using degraded feature set (UDP) for DNS server 192.168.48.2.

  It looks like this upstream issue:
  https://github.com/systemd/systemd/issues/5352

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: systemd 232-21ubuntu3
  ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
  Uname: Linux 4.10.0-20-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.4-0ubuntu4
  Architecture: amd64
  Date: Thu May 11 10:54:09 2017
  MachineType: Dell Inc. Precision Tower 7910
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=/dev/mapper/system-root ro quiet splash vt.handoff=7
  SourcePackage: systemd
  UpgradeStatus: Upgraded to zesty on 2017-05-11 (0 days ago)
  dmi.bios.date: 02/28/2017
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A17
  dmi.board.name: 0NK5PH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 7
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA17:bd02/28/2017:svnDellInc.:pnPrecisionTower7910:pvr:rvnDellInc.:rn0NK5PH:rvrA00:cvnDellInc.:ct7:cvr:
  dmi.product.name: Precision Tower 7910
  dmi.sys.vendor: Dell Inc.

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