On 20 maj 2014, at 22:57, Mark Delany <[email protected]> wrote: >> one can lookup A, AAAA and SRV in parallel and positive answer >> to SRV, as Paul mentioned, can have additional A and AAAA RRs. > > A downside is that clients has to wait for the SRV query to complete > so they can be sure of the presence or not of an SRV.
You have to look and count on A/AAAA + HTTP with redirect when comparing with SRV+A/AAAA or URI+A/AAAA. I.e. some of the losses in even parallell URI/A/AAAA are compensated by loosing roundtrips in HTTP. Patrik
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