FreeBSD-main-amd64-test - Build #23667 - Still Unstable

FreeBSD-main-amd64-test - Build #23667 (fa6fa98ac712e48fe8e9bca1295b1c54cf744724) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23667/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23667/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23667/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)

d434607b3d5182d38b82f23fe0586b3744dd0273 by christos:
kinst: use bool where appropriate

47a5d58e3bba71094e5476295df96484bc633365 by christos:
kinst: fix kinst_probe_md field indentation

fa6fa98ac712e48fe8e9bca1295b1c54cf744724 by bapt:
sh(1): initialize smark to zero in main()



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.frag6.frag6_19.frag6_19

Error Message:
Global IPv6 statistics do not match: 19 != 20

FAILED:  sys.netlink.test_rtnl_ifaddr.py.TestRtNlAddIfaddrLo::test_add_6[gu_host]

Error Message:
/usr/tests/sys/netlink/test_rtnl_ifaddr.py:702: AssertionError

FAILED:  sys.netlink.test_rtnl_ifaddr.py.TestRtNlAddIfaddrLo::test_add_6[gu_prefix]

Error Message:
/usr/tests/sys/netlink/test_rtnl_ifaddr.py:702: AssertionError