[Bug 289821] sys/netpfil/pf/mld.py:TestMLD::test_router_alert test fails intermittently in CI

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 24 Sep 2025 17:53:29 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289821

            Bug ID: 289821
           Summary: sys/netpfil/pf/mld.py:TestMLD::test_router_alert test
                    fails intermittently in CI
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: regression
          Severity: Affects Only Me
          Priority: ---
         Component: tests
          Assignee: kp@freebsd.org
          Reporter: me@svmhdvn.name
                CC: testing@FreeBSD.org

Created attachment 264067
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=264067&action=edit
kyua test report

The 'sys/netpfil/pf/mld.py:TestMLD::test_router_alert' testcase fails
intermittently in CI:

===> Failed tests
sys/netpfil/pf/mld.py:TestMLD::test_router_alert  ->  failed:
/usr/tests/sys/netpfil/pf/mld.py:84: AssertionError  [6.084s]


I have reproduced this error using Bricoler with 100 runs for good measure and
attached the failing test report in this bug:

$ bricoler run freebsd-src-regression-suite --param freebsd-src:url=/usr/src
--param freebsd-src:branch= --param
freebsd-src-regression-suite:hypervisor=bhyve --param
freebsd-src-regression-suite:memory=4096 --param
freebsd-src-regression-suite:ncpus=2 --param
freebsd-src-regression-suite:parallelism=1 --param
freebsd-src-regression-suite:count=100 --param
freebsd-src-regression-suite:tests='sys/netpfil/pf/mld.py:TestMLD::test_router_alert'

@kp, since you added the tests in
https://cgit.freebsd.org/src/commit/?id=b6d0caa485072b9b167a48959e37bd1871d80c6c
(pf tests: verify we now allow MLD packets with the Router Alert extention
header), please triage as necessary.

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