<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><div>Hi Kraishak</div><div> In addition to Darren's excellent suggestion to enable debug logging, you </div><div>write that the number of "max-unacked-clients" reached 14 during your testing.</div><div>I wonder if this could be because Kea was waiting for the next "ha-heartbeat" </div><div>before transitioning.</div><div><br></div><div>Could you retry your test and wait until the next failed "ha-heartbeat" command?</div><div><br></div><div>There is an open Kea GitLab issue that describes this situation.</div><div>"partner-down state transition when max-unacked-clients reached"</div><div>https://gitlab.isc.org/isc-projects/kea/-/issues/2592</div><div><br></div><div>Also, check that your testing software correctly updates the "secs" field in </div><div>retries.</div><div><br></div><div>Kind Regards Peter</div><div><br data-mce-bogus="1"></div></div></div></body></html>