please reopen if this is still an issue
** Changed in: systemd (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1812637
Title:
systemd-resolved stops resolving
Status in systemd package in Ubuntu:
Invalid
Bug description:
Regularly (= after about 15 mins of use) the systemd-resolved service
stops resolving DNS names (any).
Configuration:
Two domains defined - one internal, one for external services
DNS server does not provide DNSSEC services
Both domains are in the search path (served by DHCP)
Effect:
Clients refuse to resolve internal domain servers (short or FQDN) after about
15 mins.
Workaround:
from the client CLI
sudo systemctl restart systemd-resolved.service
Background:
A Github error (https://github.com/systemd/systemd/issues/6490) describes the
cause to be (missing) DNSSEC.
I found discussions about "the correct way" DNS works (with only one
domain).
Happens exclusively on Ubuntu clients (Windows, Mac and Fedora worked
fine).
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: systemd 239-7ubuntu10.6
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 21 11:57:32 2019
InstallationDate: Installed on 2018-04-30 (266 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 05ac:0273 Apple, Inc.
Bus 001 Device 002: ID 05ac:8290 Apple, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Apple Inc. MacBookPro12,1
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-13-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
SourcePackage: systemd
UpgradeStatus: Upgraded to cosmic on 2018-10-20 (92 days ago)
dmi.bios.date: 08/08/2017
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP121.88Z.0171.B00.1708080033
dmi.board.name: Mac-E43C1C25D4880AD6
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro12,1
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-E43C1C25D4880AD6
dmi.modalias:
dmi:bvnAppleInc.:bvrMBP121.88Z.0171.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6:
dmi.product.family: MacBook Pro
dmi.product.name: MacBookPro12,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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