Re: Proposed resolution: PTR queries for 254.169.in-addr.arpa

Daniel Senie <[email protected]> Sat, 23 Apr 2005 02:05:30 -0400
Newsgroups gmane.ietf.zeroconf
Message-ID <[email protected]>
This looks fine.

I'm in favor of accepting this wording, and putting this document to bed.

At 12:14 AM 4/23/2005, you wrote:
>Here is a proposed resolution to the Issue:
>
>"Mapping from IPv4 addresses to host names is conventionally done
>by issuing DNS queries for names of the form,
>"x.x.x.x.in-addr.arpa." When used for link-local addresses, which
>have significance only on the local link, it is inappropriate to
>send such DNS queries beyond the local link.
>DNS clients MUST NOT send unicast DNS queries for any name that
>falls within the "254.169.in-addr.arpa." domain.
>
>Recursive name servers MUST NOT allow these queries to
>escape the local scope.  Recursive name servers MAY reply
>with RCODE 3, or they MAY silently discard the request.
>
>By default, recursive name server implementations SHOULD be
>configured to act as if they were authoritative for an
>empty 254.169.in-addr.arpa zone and return RCODE 3 for any
>such query.  Implementations SHOULD allow this default to
>be overridden.  Returning an RCODE 3 is the correct default
>setting because it reduces the query load but also because if
>the site administrator has not set up the reverse tree
>corresponding to IPv4 Link-Local addresses in use,
>returning RCODE 3 is in fact the correct answer."