hmm.... not the answer I was hoping for but clear and final...<br><br>I've been interpreting <br><a href="http://www.faqs.org/rfcs/rfc1035.html">http://www.faqs.org/rfcs/rfc1035.html</a><br>and guessed that QDCOUNT could have been used that way. <br>
<br>will look for alternative solutions.<br><br>Thanks a lot guys for the quick reply.<br><br>fede<br><pre><br></pre><br><div class="gmail_quote">On Wed, Dec 29, 2010 at 11:52 PM, Michael Sinatra <span dir="ltr"><<a href="mailto:michael@rancid.berkeley.edu">michael@rancid.berkeley.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div></div><div class="h5">On 12/29/10 14:06, Alan Clegg wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
On 12/29/2010 2:17 PM, Federico Barbieri wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Not sure if this is the right place to ask but I've been trying to dig<br>
around and found nothing...<br>
<br>
reading the dns specification it would seems possible to send multiple<br>
request in a single packet.<br>
</blockquote>
<br>
I'm not sure what the actual reference is, but "don't do that".<br>
<br>
Nobody supports it (what would the answer section contain? what does<br>
the RCODE actually mean?)...<br>
</blockquote>
<br></div></div>
I believe it's in the EDNS1 specification that Paul did a while back, after EDNS0. I don't think it ever got advanced to RFC:<br>
<br>
<a href="http://tools.ietf.org/html/draft-ietf-dnsext-edns1-03" target="_blank">http://tools.ietf.org/html/draft-ietf-dnsext-edns1-03</a><br>
<br>
See especially section 4.<br>
<br>
The answer to your question on RCODE:<br>
<br>
<br>
4.2. RCODE and AA apply to all RRs in the answer section having the<br>
<br>
QNAME that is shared by all questions in the question section. AA<br>
applies to all matching answers, and will not be set unless the exact<br>
original request was processed by an authoritative server and the<br>
response forwarded in its entirety.<br>
<br>
michael<br>
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</blockquote></div><br>