FreeBSD-main-amd64-test - Build #23507 - Still Unstable

FreeBSD-main-amd64-test - Build #23507 (fefac543590db4e1461235b7c936f46026d0f318) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23507/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23507/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23507/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)

b0cf48305f7fcd6b134b1bae8597ad432e80f2e1 by yuripv:
em(4): update sysctl list, mention iflib(4)

fefac543590db4e1461235b7c936f46026d0f318 by corvink:
bhyve: fix vCPU single-stepping on VMX



The failed test cases:

2 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputLoopback::test_output6_self_udp[ll-sav]

Error Message:
/usr/tests/atf_python/sys/net/tools.py:72: IndexError

FAILED:  sys.netlink.test_snl.snl_parse_errmsg_capped

Error Message:
1 checks failed; see output for more details