firestuff/2009-09-11-confusing-bind-with-cnames.html

<!--# set var="title" value="Confusing BIND with CNAMEs" -->
<!--# set var="date" value="2009-09-11" -->

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<p>Given the zone:</p>

<pre><code>subdomain IN NS nameserver
nameserver IN CNAME nameserver.otherserver
</code></pre>

<p>in a BIND server that is both recursive and authoritative, requests without RD (recursion desired) return the NS record, while requests with RD return SERVFAIL. Changing it to:</p>

<pre><code>subdomain IN NS nameserver.otherserver
</code></pre>

<p>fixes the problem, though both resolution trees are perfectly valid.</p>

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