Result of the repro:
#2 ipv6 fails and gets into a loop dig @10.241.3.1 -t AAAA math.lab #2a - Good case (dnsmasq 2.85) root@j-dnsmasq-release:~# dig @10.241.3.1 -t AAAA math.lab dnsmasq: query[AAAA] math.lab from 10.241.3.1 dnsmasq: config math.lab is NODATA-IPv6 ; <<>> DiG 9.16.15-Ubuntu <<>> @10.241.3.1 -t AAAA math.lab ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48650 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;math.lab. IN AAAA ;; Query time: 0 msec ;; SERVER: 10.241.3.1#53(10.241.3.1) ;; WHEN: Tue Jan 11 13:09:21 UTC 2022 ;; MSG SIZE rcvd: 37 #2b - Bad case (dnsmasq 2.86) root@j-dnsmasq-proposed:~# dig @10.241.3.1 -t AAAA math.lab dnsmasq: query[AAAA] math.lab from 10.241.3.1 dnsmasq: forwarded math.lab to 127.0.0.53 dnsmasq: query[AAAA] math.lab from 10.241.3.1 dnsmasq: forwarded math.lab to 127.0.0.53 dnsmasq: query[AAAA] math.lab from 10.241.3.1 ... dnsmasq: Maximum number of concurrent DNS queries reached (max: 150) dnsmasq: config error is REFUSED ... repeats infinitely There is no ipv6 answer configured, so it is ok to return an empty/bad answer. But dnsmasq should not fall into a forwarding loop right? Or does this test make a hard configuration mistake (always did) that now in 2.86 exposes an issue, but was always wrong? The original test command of `resolvectl query math.lab` gets into a "wait until timeout" with the new behavior. -- 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/1957086 Title: Autopkgtest systemd fail against dnsmasq 2.86 (22.04) Status in dnsmasq package in Ubuntu: New Status in systemd package in Ubuntu: New Bug description: Full log (same on all architectures): https://autopkgtest.ubuntu.com/results/autopkgtest-jammy/jammy/arm64/s/systemd/20220106_214401_24d29@/log.gz The test is from systemd: https://github.com/systemd/systemd/blob/main/test/networkd-test.py#L619 Tail of the log: ``` ERROR: test_resolved_domain_restricted_dns (__main__.DnsmasqClientTest) resolved: domain-restricted DNS servers ---------------------------------------------------------------------- Traceback (most recent call last): File "/tmp/autopkgtest.NdIvJq/build.fBQ/src/test/networkd-test.py", line 678, in test_resolved_domain_restricted_dns out = subprocess.check_output(['resolvectl', 'query', 'math.lab']) File "/usr/lib/python3.9/subprocess.py", line 424, in check_output return run(*popenargs, stdout=PIPE, timeout=timeout, check=True, File "/usr/lib/python3.9/subprocess.py", line 528, in run raise CalledProcessError(retcode, process.args, subprocess.CalledProcessError: Command '['resolvectl', 'query', 'math.lab']' returned non-zero exit status 1. ``` Tagging update-excuse to be shown in excuses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1957086/+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
