FreeBSD-main-amd64-test - Build #24736 - Still Unstable

FreeBSD-main-amd64-test - Build #24736 (f79a8585bb06a4fabe0aa2458586dc480693ea0c) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24736/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24736/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24736/console

Status explanation:
"Unstable" - some tests are suspected being broken by the following changes
"Still Unstable" - the failing test cases have not been fixed by these
                   following changes and this is a notification to note that
                   these changes have not been fully tested by the CI system

Change summaries:
(Those commits are likely but not certainly responsible)

b1710124ff14f96db4c2a8fa37fc7c7b433fb176 by markj:
scsi_cd: Use a bool for the second parameter of cdcheckmedia()

c961afe82596bdeb7e6a8626f02ddb181c8a24b6 by markj:
scsi_cd: Maintain a periph reference during media checks

0c0ec5c8cc482e68e17e2389df4e550f65242985 by markj:
scsi_cd: Remove commented-out code

6c892b79de590443a180269507f61f3d8a9ec879 by br:
snd_hdspe(4): Per device sysctl for sample rate.

fae467c2212ced8e82f5fa385d316445c8874941 by kib:
chflags(1): Fix -f option

f79a8585bb06a4fabe0aa2458586dc480693ea0c by glebius:
sockets: garbage collect SS_ISCONFIRMING



The failed test cases:

1 tests failed.
FAILED:  sys.netpfil.common.dummynet.ipfw_pls_gilbert

Error Message:
atf-check failed; see the output of the test for details