FreeBSD-main-amd64-test - Build #25774 - Still Unstable

FreeBSD-main-amd64-test - Build #25774 (456666408f64d18c68b79ae13f5ae063df3c7293) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25774/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25774/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25774/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)

964687879a38034d3f0221d3c73b9add6cadb567 by jfree:
syslogd: Create syslogd libcasper service

ad607893c9a38b6626e9e83842759f81d87173a1 by jfree:
syslogd: Use anonymous union in struct filed

2567168dc49869475db79176bf5f6ae9761bc75a by jfree:
syslogd: Refresh configuration using libcasper

61a29eca550b80d179934a7198c41ad4d255f81c by jfree:
syslogd: Log messages using libcasper

24f4019b6a898edde3159e930c3ab6ef88ce87c9 by jfree:
syslogd: Block timezone updating in capability mode

897240c7d666744137da6125feabf3c3a5522ada by jfree:
syslogd: Enter capability mode

d2d180fb77362eb1381ada9edefe4332be776bf2 by jfree:
syslogd: Watch for dead pipe processes

4ecbee2760f7c7bb0af8b28c202b12d5374e9f4c by jfree:
syslogd: Open forwarding socket descriptors

8b63477e5e008574cfdc14185e993234244dc908 by jfree:
syslogd: Add host forwarding test

b872bb7206300dea5d02313985704da75ae87598 by jfree:
syslogd: Split up basic test case

700f7e793b3793606fbb9942eda03ac02991c126 by jhibbits:
powerpc: Get rid of interrupt subterfuge for IPIs

edfccce309a6126e3108ba073eb8fb68e61fd883 by jhibbits:
powerpc: Remove unnecessary prototype.

5c15094916bfacf33f832b9144d551a59b6bcc98 by np:
cxgbe(4): Update the board names of the T6 OCP cards.

456666408f64d18c68b79ae13f5ae063df3c7293 by trasz:
Speed up syncer shutdown



The failed test cases:

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

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

FAILED:  sys.net.routing.test_routing_l3.py.TestIfOps::test_change_prefix_route[inet]

Error Message:
/usr/tests/sys/net/routing/test_routing_l3.py:42: AssertionError