Ubuntu
systemd package

  1. Bug #1880258
  2. Comment #10

Comment 10 for bug 1880258

Revision history for this message
rjc (rjcz) wrote :

I just upgraded two machines to Ubuntu 20.04 LTS and /var/log/syslog is full of:

systemd-resolved[...]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

with the only thing reported by tcpdump(8) as:

[...] [udp sum ok] 9797 NXDomain* q: AAAA? connectivity-check.ubuntu.com.[...]

The only thing that fixes it is by making connectivity-check.ubuntu.com fully qualified.

I have over 250 machines to upgrade. It all adds up.

Please append the dot.