Ubuntu
systemd package

  1. Bug #1656830
  2. Comment #4

Comment 4 for bug 1656830

Revision history for this message
Jaromir Obr (jaromir-obr) wrote :

I can see the same issue once I upgraded to Ubuntu 17.04 (previous Ubuntu 16.10 was not affected).
Sometimes when I resume my notebook from sleep, DNS stops working for a few minutes. Restart of network or systemd-resolved didn't help. It seems that it starts working once system turns DNSSEC mode off:

$ service systemd-resolved status
...

dub 17 13:53:38 mira-HP-ENVY-Notebook systemd-resolved[13838]: DNSSEC validation failed for question docs.google.com IN A: failed-auxiliary
dub 17 13:53:38 mira-HP-ENVY-Notebook systemd-resolved[13838]: DNSSEC validation failed for question docs.google.com IN AAAA: failed-auxiliary
dub 17 13:53:38 mira-HP-ENVY-Notebook systemd-resolved[13838]: DNSSEC validation failed for question www.googleapis.com IN A: failed-auxiliary
dub 17 13:53:39 mira-HP-ENVY-Notebook systemd-resolved[13838]: Using degraded feature set (UDP) for DNS server 10.0.0.138.
dub 17 13:53:39 mira-HP-ENVY-Notebook systemd-resolved[13838]: Server 10.0.0.138 does not support DNSSEC, downgrading to non-DNSSEC mode.