"DNS lookup tempfail" when running on an openbsd IPv6-only node #231
Description
Hello,
I'm running ntp-4.2.8pl10p6 on openbsd7.4 .. I saw messages like this one
ntpd[26862]: DNS lookup tempfail
This node is running with IPv6-only.
The default ntpd.conf shipped is
# $OpenBSD: ntpd.conf,v 1.16 2019/11/06 19:04:12 deraadt Exp $
#
# See ntpd.conf(5) and /etc/examples/ntpd.conf
servers pool.ntp.org
server time.cloudflare.com
sensor *
constraint from "9.9.9.9" # quad9 v4 without DNS
constraint from "2620:fe::fe" # quad9 v6 without DNS
constraints from "www.google.com" # intentionally not 8.8.8.8
Since I did not have IPv4, I initially only commented the constraint with IPv4 . But it was not enough.
Then I realised that pool.ntp.org doesn't include a AAAA record. I ended up by commenting the servers line and added several servers close enough .
# $OpenBSD: ntpd.conf,v 1.16 2019/11/06 19:04:12 deraadt Exp $
#
# See ntpd.conf(5) and /etc/examples/ntpd.conf
#servers pool.ntp.org
server time.cloudflare.com
server ntp1.xxxx
server ntp2.xxxx
sensor *
#constraint from "9.9.9.9" # quad9 v4 without DNS
constraint from "2620:fe::fe" # quad9 v6 without DNS
constraints from "www.google.com" # intentionally not 8.8.8.8
At this moment, I don't know how the geo-location discovery is working, but can you please consider those running IPv6 (only) client and allow discovery of AAAA records for pool.ntp.org?