This bug was fixed in the package systemd - 246.6-1ubuntu1.2 --------------- systemd (246.6-1ubuntu1.2) groovy; urgency=medium
[ Ioanna Alifieraki ] * d/p/lp1911187-systemctl-do-not-shutdown-immediately-on-scheduled-shutdo.patch: Do not shutdown immediately when scheduled shutdown fails (LP: #1911187) https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=bbca658178d27e0ffaf759ba3115878d26c917a6 [ Dan Streetman ] * d/p/debian/patches/lp1880258-log-nxdomain-as-debug.patch: Change NXDOMAIN 'errors' to log level debug (LP: #1880258) https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b8e864eb907469616d688eab39b20491693d7c3a * d/p/lp1913763-udev-rules-add-rule-to-create-dev-ptp_hyperv.patch: Create symlink for hyperv-provided ptp device (LP: #1913763) https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=83c7476c80e4139ee7c1ec18a549c30d37d3b4b2 -- Ioanna Alifieraki <ioanna-maria.alifier...@canonical.com> Tue, 23 Feb 2021 02:31:55 +0200 ** Changed in: systemd (Ubuntu Groovy) Status: Fix Committed => Fix Released -- 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/1880258 Title: Add trailing dot to make connectivity-check.ubuntu.com. absolute and reduce NXDOMAIN warning noise Status in network-manager package in Ubuntu: Fix Released Status in systemd package in Ubuntu: Fix Released Status in systemd source package in Bionic: Fix Committed Status in systemd source package in Focal: Fix Committed Status in systemd source package in Groovy: Fix Released Status in network-manager source package in Hirsute: Fix Released Status in systemd source package in Hirsute: Fix Released Bug description: [impact] systemd-resolved emits a disturbingly large amount of NXDOMAIN log messages that do not actually indicate any real problem [test case] see original description, or look at any log from any recent Ubuntu system, or search google for endless complaints about NXDOMAIN messages logged by Ubuntu [regression potential] any regression would likely be isolated to systemd-resolved handling of a NXDOMAIN response from its upstream nameserver, including possibly failing to resolve a hostname or delays in resolving hostnames [scope] this is needed for all releases; the patch is not upstream, but carried by Ubuntu [original description] I normally don't like this, but it's a one-character change so it's easier to start with the solution: diff -u -r1.1 /usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf --- /usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf +++ /usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf @@ -1,2 +1,2 @@ [connectivity] -uri=http://connectivity-check.ubuntu.com/ +uri=http://connectivity-check.ubuntu.com./ Making this name absolute instead of relative avoids spurious resolutions of "connectivity-check.ubuntu.com.your_domain." This removes a fair amount of NXDOMAIN error noise in journalctl. Observing the issue and the fix requires 3 terminals: 1. tcpdump -i any 'port domain' 2. journalctl --boot -u systemd-resolved -f 3. nmcli c down "Wired connection 1"; nmcli c up "Wired connection 1" => observe the NXDOMAIN noise over a couple few minutes Now make the hostname absolute with the trailing dot above and run: systemctl reload NetworkManager Wait 1 min for things to stabilize. Test again: nmcli c down "Wired connection 1"; nmcli c up "Wired connection 1" => observe non-zero but significantly reduced NXDOMAIN noise over a couple few minutes Originally reported at https://askubuntu.com/a/1242611/117217 Plenty of people annoyed by NXDOMAIN warnings, just Google it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1880258/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp