<div dir="ltr">@Winfried,<div><br><div>We do retry over TCP if there's a case mismatch. However, we've found out that many of the case-ignoring nameservers don't support TCP, resulting in resolution failures.<br><a class="gmail_plusreply"><br></a></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 12, 2022 at 12:59 AM <<a href="mailto:abang@t-ipnet.net">abang@t-ipnet.net</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"><u></u><div>Hi,<br><br>> Responses that fail to preserve the case of<br>> the query name may be dropped as<br>>potential cache poisoning attacks<br><br>Why not fallback to TCP in such cases?<br><br>Winfried</div>_______________________________________________<br>
dns-operations mailing list<br>
<a href="mailto:dns-operations@lists.dns-oarc.net" target="_blank">dns-operations@lists.dns-oarc.net</a><br>
<a href="https://lists.dns-oarc.net/mailman/listinfo/dns-operations" rel="noreferrer" target="_blank">https://lists.dns-oarc.net/mailman/listinfo/dns-operations</a><br>
</blockquote></div>