FreeBSD-stable-15-amd64-test - Build #503 - Still Unstable

FreeBSD-stable-15-amd64-test - Build #503 (9fa21f66e48ba0c00c80a9ed1c8bf1a09e9ecdae) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/503/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/503/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/503/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)

9fa21f66e48ba0c00c80a9ed1c8bf1a09e9ecdae by siva:
libnv/tests: unskip nvlist_send_recv__send_many_fds__dgram



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.ndp.ndp_prefix_lifetime_extend

Error Message:
Expiry time was shortened: 20 <= 19

FAILED:  sys.netpfil.pf.divert-to.out_div

Error Message:
Test case body returned a non-ok exit code, but this is not allowed

FAILED:  sys.netpfil.pf.divert-to.out_div_out

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