FreeBSD-main-amd64-test - Build #27546 - Still Unstable

FreeBSD-main-amd64-test - Build #27546 (4a1b69ade6b5e8665dfb4d0cb683854705192a68) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27546/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27546/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27546/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)

4a1b69ade6b5e8665dfb4d0cb683854705192a68 by gnn:
Start adding an exercise mode for programs under test.



The failed test cases:

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

Error Message:
Test case body timed out

FAILED:  sys.netpfil.pf.nat.endpoint_independent_static_port

Error Message:
server1 did not receive connection from client (endpoint-independent)

FAILED:  usr.bin.tar.functional_test.test_option_s

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