FreeBSD-main-amd64-test - Build #22653 - Still Unstable

FreeBSD-main-amd64-test - Build #22653 (346b8b25d90acbbbc829ddf2227ab978ffdaec7a) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22653/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22653/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/22653/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)

b939fe5ff184667e02b5904c696587e0f1f367af by karels:
dma mailer.conf: add comments, including pointer for sendmail

c934f2a574e246eef0e27558d310952e5524e85e by karels:
daily 150.clean-hoststat: suppress error when using dma

38d2b4db7853ecfb87b40e83a9b9de9985c2fdc1 by karels:
daily 440.status-mailq: avoid error from dma with submit queue

a9e7a44c243671647180160fc448a3ef3950f55c by markj:
makefs: Add some validation of ZFS pool names

346b8b25d90acbbbc829ddf2227ab978ffdaec7a by markj:
debugnet: remove spurious message on boot



The failed test cases:

5 tests failed.
FAILED:  sys.fs.fusefs.mknod.main

Error Message:
Returned non-success exit status 1

FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputScope::test_output6_linklocal_scope[ll_differentif2]

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

FAILED:  sys.aio.aio_test.aio_socket_blocking_short_write

Error Message:
Test case body timed out

FAILED:  sys.aio.aio_test.aio_socket_blocking_short_write_vectored

Error Message:
Test case body timed out

FAILED:  sys.aio.aio_test.aio_socket_short_write_cancel

Error Message:
/usr/src/tests/sys/aio/aio_test.c:1396: aio_error(&iocb) == EINPROGRESS not met