** Changed in: dnsmasq (Ubuntu Kinetic)
Assignee: (unassigned) => Lena Voytek (lvoytek)
** Changed in: dnsmasq (Ubuntu Jammy)
Assignee: (unassigned) => Lena Voytek (lvoytek)
** Tags added: server-todo
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https://bugs.launchpad.net/bugs/1981794
Title:
Duplicate/retried DNS queries fail with REFUSED (Fixed in upstream)
Status in dnsmasq package in Ubuntu:
Confirmed
Status in dnsmasq source package in Jammy:
Confirmed
Status in dnsmasq source package in Kinetic:
Confirmed
Bug description:
Duplicate or retried DNS queries will return REFUSED for one of the
queries causing intermittent failures in clients.
This probably breaks lots of things, but for me is causing 22.04's
internet connection sharing to be unstable. It's particularly bad for
my Xbox which seems to like sending duplicate queries.
Here's an example capture:
22:37:25.308212 IP 10.42.0.16.54248 > 10.42.0.1.53: 22442+ A?
title.auth.xboxlive.com. (41)
22:37:25.332711 IP 10.42.0.16.54248 > 10.42.0.1.53: 22442+ A?
title.auth.xboxlive.com. (41)
22:37:25.332740 IP 10.42.0.1.53 > 10.42.0.16.54248: 22442 Refused 0/0/0 (41)
22:37:25.353003 IP 10.42.0.1.53 > 10.42.0.16.54248: 22442 2/0/0 CNAME
title.auth.xboxlive.com.akadns.net., A 40.64.90.82 (105)
This has been fixed in upstream as of Sept 2021 in the unreleased 2.87
version. It's apparently a regression in version 2.86 (also released
in Sept 2021). Ubuntu 22.04 and later all use the broken 2.86 version.
Upstream fix:
https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=2561f9fe0eb9c0be1df48da1e2bd3d3feaa138c2
Upstream bug thread:
https://www.mail-archive.com/search?l=dnsmasq-discuss%40lists.thekelleys.org.uk&q=subject:%22%5C%5BDnsmasq%5C-discuss%5C%5D+REFUSED+after+dropped+packets%22&o=oldest&f=1
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