Public bug reported: 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. ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1812637 Title: systemd-resolved stops resolving Status in systemd package in Ubuntu: New 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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