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<p>Hi Harish,</p>
<p><br>
</p>
<p>Not really. In ldns there are functions to find information,
like ldns_dnssec_zone_find_rrset that finds by name and rrset type
in the information and that could be useful (depending on what you
need).</p>
<p>But unbound has libunbound, and it can return responses to a
function call, and recent unbound versions have the auth-zone
functionality. This can be used to create a libunbound instance
that returns authority zone responses for a query from zone file
contents. Right now that needs the libunbound call to read a
unbound.conf file, that contains an auth-zone directive, with a
zonefile pointed at where you want it. And with for-downstream:
yes specified; that makes it return authority responses to the
libunbound calls, without that it would return recursive
responses.</p>
<p>If you then want to put that DNS response on the wire, and not do
something else with it, then there are authority DNS servers that
do the whole thing (a bit obvious, but I thought I would mention
it), like NSD and unbound with auth-zone configured.</p>
<p>If the something else you want to do just means change a couple
of names, then unbound's local-data is in front of the auth-zone,
and would be processed first. It can do some things, eg. return
that data instead.<br>
</p>
<p>Best regards, Wouter<br>
</p>
<br>
<div class="moz-cite-prefix">On 20/09/18 18:58, Harish Holenarsipura
Viswanatha wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAG0aUSg59V-e6qeNxkpZEf6ebiVfCmh5_jCE=RK1A03Pxz1Dgg@mail.gmail.com">
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<div dir="auto">Hi,
<div dir="auto"><br>
</div>
<div dir="auto">Is there away to generate DNS response for a
particular query from the zone file contents. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks</div>
<div dir="auto">Harish </div>
</div>
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