<html><head></head><body>Agreed.<br><br><div class="gmail_quote">On March 18, 2016 12:20:04 PM PDT, Florian Weimer <fweimer@redhat.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">We have received a bug report that our stub resolver does not retry over<br />TCP when asked to do so by some Google DNS resolvers:<br /><br /> <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1319296">https://bugzilla.redhat.com/show_bug.cgi?id=1319296</a><br /><br />The reason is that we check for RA=0 first and treat the server as<br />unusable if the bit is cleared. Only after that, we check the TC bit.<br /><br />We could easily check the TC bit first, but not setting RA=1 on a<br />recursive response when you are actually willing to provide recursion<br />looks like a server bug.<br /><br />Thoughts?<br /><br />Thanks,<br />Florian<br /><hr /><br />dns-operations mailing list<br />dns-operations@lists.dns-oarc.net<br /><a href="https://lists.dns-oarc.net/mailman/listinfo/dns-operations">https://lists.dns-oarc.net/mailman/listinfo/dns-operations</a><br />dns-jobs mailing list<br /><a
href="https://lists.dns-oarc.net/mailman/listinfo/dns-jobs">https://lists.dns-oarc.net/mailman/listinfo/dns-jobs</a><br /></pre></blockquote></div><br>
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