Hello Paride, thanks for your analysis.
I did a downgrade as proposed and can confirm that the problem goes away then. We are running our own ntp server on bionic. Maybe you could verify the problem by running your own ntp server. The problem with check_ntp_time also occurs when querying localhost. The following commented out ntp-server option with "kod" enabled leads to "Offset unknown". restrict -4 default notrap nomodify nopeer noquery limited #restrict -4 default kod notrap nomodify nopeer noquery limited The following post suspects that check_ntp_time is not handling kod correctly. https://serverfault.com/a/947963 Thanks, Christoph -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881880 Title: latest update 2.2-3ubuntu3 caused check_ntp_time to fail To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/monitoring-plugins/+bug/1881880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
