On 2012-06-10 12:59 PM, Patrick W. Gilmore wrote: >>> 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. >> >> It strikes me as laziness and cost-shifting. > > If you need to do multiple queries (e.g. TXT & MX), is it better for > either side to do two queries instead of one?
yes, since the queries can be transmitted simultaneously, and there's way less risk of TC=1 and followup TCP. paul
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