FreeBSD-main-amd64-test - Build #27604 - Still Unstable

FreeBSD-main-amd64-test - Build #27604 (60ae4e52f33e3c67720b68a29e35f6c114a3386c) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27604/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27604/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27604/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)

60ae4e52f33e3c67720b68a29e35f6c114a3386c by jfree:
syslogd: Terminate pipe processes gracefully



The failed test cases:

5 tests failed.
FAILED:  sys.netpfil.common.dummynet.ipfw_queue

Error Message:
Echo sanity check failed

FAILED:  sys.netpfil.pf.nat.endpoint_independent_compat

Error Message:
server1 did not receive connection from client (default)

FAILED:  usr.bin.grep.grep_freebsd_test.eflags

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

FAILED:  usr.sbin.etcupdate.conflicts_test.main

Error Message:
Returned non-success exit status 1

FAILED:  usr.sbin.etcupdate.tests_test.main

Error Message:
Returned non-success exit status 1