Hello, Sorry we missed this bug for so long. I can confirm the issue is present in 22.04 and 22.10 and can be fixed with the commit you provided. I created a patch file that can be added to 22.04, attached here. I will mark this bug as confirmed too.
Thanks! ** Patch added: "fix-dns-retry-confusion-jammy.patch" https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1981794/+attachment/5620120/+files/fix-dns-retry-confusion-jammy.patch ** Also affects: dnsmasq (Ubuntu Kinetic) Importance: Undecided Status: New ** Also affects: dnsmasq (Ubuntu Jammy) Importance: Undecided Status: New ** Changed in: dnsmasq (Ubuntu Jammy) Status: New => Confirmed ** Changed in: dnsmasq (Ubuntu Kinetic) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to dnsmasq in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1981794/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
