lör 2010-05-22 klockan 17:04 -0600 skrev Alex Rousskov:
> Is there an RFC or somesuch that recommends parallel lookups over
> sequential ones or vice versa?
IIRC the RFC recommends AAAA lookup and only if that returns an empty
respose then try A.
But at least Linux does the lookup in parallel these days, and since we
want the result of both and also cannot trust errors returned by the
AAAA lookup there is not much reason to delay, and if we were to delay
then the order should be A followed by AAAA unless the A lookup results
in error.
Regards
Henrik
Received on Sun May 23 2010 - 09:06:08 MDT
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