FreeBSD-main-amd64-test - Build #24666 - Still Unstable

FreeBSD-main-amd64-test - Build #24666 (6b1c534927ad47e9b0dd8be1a39f56c3ea813d44) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24666/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24666/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24666/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)

6b1c534927ad47e9b0dd8be1a39f56c3ea813d44 by asomers:
Add a regression test for PR 276191.



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputScope::test_output6_linklocal_scope[ll_differentif1]

Error Message:
/usr/tests/atf_python/sys/net/tools.py:93: IndexError

FAILED:  sys.kern.shutdown_dgram.unblock

Error Message:
Test case body timed out

FAILED:  sys.kern.unix_passfd_dgram.send_and_shutdown

Error Message:
/usr/src/tests/sys/kern/unix_passfd_test.c:431: openfiles() == nfiles - 1 not met