Please turn on debug-level logging for systemd-resolved by running
`systemctl edit systemd-resolved`, and add the following line to the
[Service] section:
Environment=SYSTEMD_LOG_LEVEL=debug
Then `systemctl daemon-reload && systemctl restart systemd-resolved`.
Once you have some debug-level logs, please attach that to this bug
report.
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1990659
Title:
Systemd component broken following update
Status in systemd package in Ubuntu:
Incomplete
Bug description:
Following update to the latest package today (245.4-4ubuntu3.18) on
focal, systemd-resolved and systemd-timesyncd (at least) can't start
Ubuntu 20.04
x86_64
kernel 5.4.0-122-generic
logs:
Sep 23 10:48:53 systemd[1]: Starting Network Name Resolution...
Sep 23 10:48:53 systemd[1672342]: systemd-resolved.service: Failed to set up
mount namespacing: /run/systemd/unit-root/dev: Invalid argument
Sep 23 10:48:53 systemd[1672342]: systemd-resolved.service: Failed at step
NAMESPACE spawning /lib/systemd/systemd-resolved: Invalid argument
Sep 23 10:48:53 systemd[1]: systemd-resolved.service: Main process exited,
code=exited, status=226/NAMESPACE
Sep 23 10:48:53 systemd[1]: systemd-resolved.service: Failed with result
'exit-code'.
Sep 23 10:48:53 systemd[1]: Failed to start Network Name Resolution.
Sep 23 10:48:53 systemd[1]: systemd-resolved.service: Scheduled restart job,
restart counter is at 5.
Sep 23 10:48:53 systemd[1]: Stopped Network Name Resolution.
Sep 23 10:48:53 systemd[1]: systemd-resolved.service: Start request repeated
too quickly.
Sep 23 10:48:53 systemd[1]: systemd-resolved.service: Failed with result
'exit-code'.
Sep 23 10:48:53 systemd[1]: Failed to start Network Name Resolution.
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