FreeBSD-main-amd64-test - Build #27655 - Still unstable

FreeBSD-main-amd64-test - Build #27655 (b0c13e7e2446fde7c559d2b15cc3c2f8d8b959f8) - Still unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27655/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27655/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27655/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)

f102a18349335bfda1eb373a64eb1ba7462cd6bb by glebius:
net: on interface detach purge all its routes before detaching protocols

7eac31c83ee3fca6a2c19ee0aa21a310e0050f51 by glebius:
tests/ipfw: add a simple fuzzing test for ipfw tables

e3caa360d5d0a73af0de1d293d5b8ff6e900ceb4 by glebius:
ipfw: make the upper half lock sleepable

b0c13e7e2446fde7c559d2b15cc3c2f8d8b959f8 by glebius:
ipfw: remove locking workarounds in the table code



The failed test cases:

6 tests failed.
FAILED:  sys.netinet6.ndp.ndp_prefix_lifetime_extend

Error Message:
Expiry time was shortened: 20 <= 19

FAILED:  sys.netpfil.common.dummynet.ipfw_queue

Error Message:
Echo sanity check failed

FAILED:  sys.netpfil.pf.pflog.rdr_action

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

FAILED:  sys.netpfil.pf.route_to.random_table

Error Message:
Target 2001:db8:4202::42:4 not selected after 10 attempts!

FAILED:  bin.pkill.pgrep-j_test.main

Error Message:
1 of 4 tests failed

FAILED:  bin.pkill.pkill-j_test.main

Error Message:
1 of 4 tests failed