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On 2012-06-10 12:59 PM, Patrick W. Gilmore wrote:
<blockquote
cite="mid:8851C660-1191-4A72-B126-B108256C326C@ianai.net"
type="cite">
<blockquote type="cite">
<div>
<blockquote type="cite"><span>A single ANY query for a domain
gives you the NS, MX, TXT and SPF records, plus any A/AAAA
record present. At scale, who knows, the reduction in
number of queries probably adds up.</span><br>
</blockquote>
<span></span><br>
<span>It strikes me as laziness and cost-shifting.</span><font
class="Apple-style-span" color="#005001"><br>
</font></div>
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<br>
<div>If you need to do multiple queries (e.g. TXT & MX), is it
better for either side to do two queries instead of one?<br>
</div>
</blockquote>
<br>
yes, since the queries can be transmitted simultaneously, and
there's way less risk of TC=1 and followup TCP.<br>
<br>
paul<br>
<br>
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