Oct 23 17:29:00 comp systemd-resolved[753]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Oct 23 17:29:00 comp systemd-resolved[753]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
I can confirm this in 20.04.1:
Oct 23 17:29:00 comp systemd- resolved[ 753]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. resolved[ 753]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Oct 23 17:29:00 comp systemd-