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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Bookman Old Style",serif">Doing battle with the exact same problem – from an over-the-weekend F5 upgrade.
<br>
<br>
So funny this is coming up now. We’re not considering a code upgrade yet, but users are complaining about the Real ISC-BIND servers returning SERVFAIL for AAAA queries (not subzone, yada yada) against F5 delegated servers.<br>
<br>
J<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Bookman Old Style",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">bind-users <bind-users-bounces@lists.isc.org> on behalf of Ondřej Surý <ondrej@isc.org><br>
<b>Date: </b>Saturday, July 5, 2025 at 12:03</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">AM<br>
<b>To: </b>Florian Piekert <floppy@floppy.org><br>
<b>Cc: </b>bind-users@lists.isc.org <bind-users@lists.isc.org><br>
<b>Subject: </b>Re: question about resolving of AAAA amazoses.com<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Specifically in this case the incorrect chain starts here:<br>
<br>
> $ dig IN AAAA feedback-smtp.us-east-1.amazonses.com @ns-265.awsdns-33.com.<br>
> <br>
> ; <<>> DiG 9.21.8-1+0~20250521.138+debian12~1.gbpefbbeb-Debian <<>> IN AAAA feedback-smtp.us-east-1.amazonses.com @ns-265.awsdns-33.com.<br>
> ;; global options: +cmd<br>
> ;; Got answer:<br>
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11817<br>
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 1<br>
> ;; WARNING: recursion requested but not available<br>
> <br>
> ;; OPT PSEUDOSECTION:<br>
> ; EDNS: version: 0, flags:; udp: 4096<br>
> ;; QUESTION SECTION:<br>
> ;feedback-smtp.us-east-1.amazonses.com. IN AAAA<br>
> <br>
> ;; AUTHORITY SECTION:<br>
> feedback-smtp.us-east-1.amazonses.com. 60 IN NS ns-1244.awsdns-27.org.<br>
> feedback-smtp.us-east-1.amazonses.com. 60 IN NS ns-1739.awsdns-25.co.uk.<br>
> feedback-smtp.us-east-1.amazonses.com. 60 IN NS ns-82.awsdns-10.com.<br>
> feedback-smtp.us-east-1.amazonses.com. 60 IN NS ns-968.awsdns-57.net.<br>
> <br>
> ;; Query time: 28 msec<br>
> ;; SERVER: 2600:9000:5301:900::1#53(ns-265.awsdns-33.com.) (UDP)<br>
> ;; WHEN: Sat Jul 05 05:59:17 CEST 2025<br>
> ;; MSG SIZE rcvd: 202<br>
<br>
<br>
<o:p></o:p></span></p>
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