FreeBSD-main-amd64-test - Build #25369 - Unstable

FreeBSD-main-amd64-test - Build #25369 (71867653008ce17a66a9c935e9dc29c1320bf48b) - Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25369/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25369/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25369/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)

00d3b74406db80084e8939450c6b86326dd1de30 by tuexen:
tcp cc: remove non-working sctp support

4036380e029708f5d6ad7aa599ce1bba9d7c067b by tuexen:
tcp: vnetify sysctl variables ack_war_timewindow and ack_war_cnt

34f746cc7f8a8dd261027a8b392b76e70adc8438 by emaste:
libm: fma: correct zero sign with small inputs

71867653008ce17a66a9c935e9dc29c1320bf48b by tuexen:
udp: improve handling of cached route



The failed test cases:

2 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6Output::test_output6_nhop

Error Message:
/usr/tests/sys/netinet6/test_ip6_output.py:142: AssertionError

FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputNhopLL::test_output6_nhop_linklocal

Error Message:
/usr/tests/sys/netinet6/test_ip6_output.py:296: AssertionError