How bind select NS record during recursive queries
Tony Finch
dot at dotat.at
Thu Nov 19 13:38:02 UTC 2020
Duleep Thilakarathne <dchandimal at gmail.com> wrote:
>
> How does bind select NS entry during recursive queries , when the answer
> section has multiple NS entries.
It's roughly based on measuring the smoothed round trip time (SRTT) to
each nameserver and picking the closest, with a lot of randomness in the
mix. Try searchengineering [BIND SRTT] for lots of discussion of the
algorithm.
Tony.
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