[dns-operations] resolver behaviour (prefer delegation vs authoritative NS records)

[Gavin McCullagh]

Hi,

I'm searching in vain for a link to a paper or presentation I'm sure I've
read in the past.

It described measurements of the various resolvers' behaviour, specifically
which NS records they tend to cache and reuse in practice for a given zone
cut -- the non-authoritative delegations from the parent zone or the
authoritative records from the child zone.

Any chance someone has a link to hand?

Gavin
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