FreeBSD-main-amd64-test - Build #24654 - Still Unstable

FreeBSD-main-amd64-test - Build #24654 (d9b1f6fbf9935a9d54c78987a04af7cda3740c56) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24654/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24654/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24654/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)

6ee181b9d5f00cfe337419370ba4590d939cce84 by glebius:
tests/net: enable if_clone_test:epair_ipv6_up_stress

effa0f6c0aad54a07917af6986d71cd0a57223b8 by glebius:
tests/netlink: mark a test that requires tun(4)

26caf57e0b0c02771b58ed99bc37b4810249d58e by glebius:
tests/netlink: improve recently added netlink_socket:membership

e6f4c31460658697827aed7f29ec6e960d6f0a87 by glebius:
netlink: improve edge case when reading out truncated last nlmsg in nb

f75d7fac109bf8e322b07456c5361ee62f5635c2 by glebius:
netlink: avoid putting empty mbufs on the socket queue

d9b1f6fbf9935a9d54c78987a04af7cda3740c56 by glebius:
netlink: fix bug with socket buffer character counter underflow



The failed test cases:

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

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

FAILED:  sys.netpfil.common.dummynet.pf_queue

Error Message:
We failed prioritisation 1 times

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