<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">Hi Ondřej,</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">We tested the same configurations shared in the first message of this thread (having stale serve enabled) on three different BIND versions:</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">9.18.41 -> Crashed with assertion (within 5 minutes)</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">9.18.48 -> Crashed with an assertion (within 5 minutes)</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">9.20.22 -> Running normally with no crash so far :) for more than 24 hours</div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763"></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;color:#073763">Thank you.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, 3 May 2026 at 13:06, Ondřej Surý <<a href="mailto:ondrej@isc.org">ondrej@isc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
> On 3. 5. 2026, at 11:58, Ibrahim Almahfooz <<a href="mailto:ibrahim.nezar@sevennet.net" target="_blank">ibrahim.nezar@sevennet.net</a>> wrote:<br>
> <br>
> Is the "recursion loop detected" message in the logs considered normal when stale serve is enabled? or is it happening due to misconfiguration?<br>
<br>
All these domains are completely broken (each in a different way), so ... yes.<br>
<br>
> We tried 9.18.48 (latest of 9.18.x) also crashed with the same error within a couple of minutes. We will perform another upgrade to version 9.20.22 and see what happens.<br>
<br>
If you can reliably reproduce this, please fill <a href="https://gitlab.isc.org/isc-projects/bind9/-/issues/new?issuable_template=Security_issue" rel="noreferrer" target="_blank">https://gitlab.isc.org/isc-projects/bind9/-/issues/new?issuable_template=Security_issue</a> and make sure you follow the template.<br>
<br>
Ondrej<br>
--<br>
Ondřej Surý (He/Him)<br>
<a href="mailto:ondrej@isc.org" target="_blank">ondrej@isc.org</a><br>
<br>
ADHD brain at work: I sometimes lose track of my inbox. Please feel free to send a gentle nudge if you're waiting on a reply!<br>
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My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours.<br>
<br>
</blockquote></div><div><br clear="all"></div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr">
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