No cc. I call them full resolved not recursive resolvers. I thought 1034 also
did.
On March 12, 2018 3:09:27 PM UTC, Paul Hoffman <paul.hoff...@vpnc.org> wrote:
>Greetings. The definition of "recursive resolver" has been problematic
>both in RFC 7719 and in draft-ietf-dnsop-terminology-bis. Section 6 of
>draft-ietf-dnsop-terminology-bis defines a bunch of terms about
>servers,
>including "recursive mode" and "recursive resolver". The current text
>gives:
>
> Recursive mode: A resolution mode of a server that receives DNS
> queries and either responds to those queries from a local cache
>or
> sends queries to other servers in order to get the final answers
> to the original queries. Section 2.3 of [RFC1034] describes this
> as "The first server pursues the query for the client at another
> server". A server operating in recursive mode may be thought of
> as having a name server side (which is what answers the query)
>and
> a resolver side (which performs the resolution function).
>Systems
> operating in this mode are commonly called "recursive servers".
> Sometimes they are called "recursive resolvers". While strictly
> the difference between these is that one of them sends queries to
> another recursive server and the other does not, in practice it
>is
> not possible to know in advance whether the server that one is
> querying will also perform recursion; both terms can be observed
> in use interchangeably.
>
> Recursive resolver: A resolver that acts in recursive mode. In
> general, a recursive resolver is expected to cache the answers it
> receives (which would make it a full-service resolver), but some
> recursive resolvers might not cache.
>
>That is, "recursive mode" is only barely defined in RFC 1034, and
>"recursive resolver" is defined almost trivially.
>
>Can these be improved on? This is one of the core ideas in the DNS
>protocol and it seems a bit weird that we don't have a crisp set of
>definitions. If there is more text from RFCs to quote, that would
>possibly be a big help.
>
>--Paul Hoffman
>
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--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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