FreeBSD-main-amd64-test - Build #21179 - Still Unstable

FreeBSD-main-amd64-test - Build #21179 (8c47d8f53854825d8e8591ccd06e32b2c798f81c) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/21179/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/21179/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/21179/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)

8c47d8f53854825d8e8591ccd06e32b2c798f81c by asomers:
prometheus_sysctl_exporter: fix metric aliasing



The failed test cases:

1 tests failed.
FAILED:  sys.net.routing.test_rtsock_l3.rtm_add_v6_temporal1_success

Error Message:
/usr/src/tests/sys/net/routing/rtsock_common.h:686: rtsock read timed out (5 seconds passed)