Re: [DNSOP] Last Call: <draft-ietf-dnsop-resolver-priming-09.txt> (Initializing a DNS Resolver with Priming Queries) to Best Current Practice

["Paul Hoffman" <[e-mail]>]

On 3 Nov 2016, at 21:16, william manning wrote:

> What method is in place to ensure that the cache is, #1, checked 
> before
> emitting priming queries, #2, that if there is already data (complete 
> or
> partial) in the cache, how is the client supposed to determine if the
> cached data is preferred over unverified, remote data?  Or does the 
> client
> operate with the presumption that local data is always wrong and the 
> best
> data is always external?
>
> Inquiring Minds want to know.

There is no such method in place. This document describes how to prime 
resolvers and when you should, but does not prohibit any other use of 
the same DNS queries when priming is not needed.

--Paul Hoffman