FreeBSD-main-amd64-test - Build #23692 - Still Unstable

FreeBSD-main-amd64-test - Build #23692 (653738e895ba022be1179a95a85089e7bc66dbbe) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23692/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23692/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23692/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)

653738e895ba022be1179a95a85089e7bc66dbbe by jhb:
ptrace: Clear TDB_BORN during PT_DETACH.



The failed test cases:

4 tests failed.
FAILED:  sys.net.if_ovpn.if_ovpn.ra

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

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