[acm-tf] How about a DNS-based interface?

Hi all,

one question I'd like to put next Tuesday (if I'll be able to connect)
is if it would be feasible/convenient to have the IP-address to
point-of-contact database available via DNS, with central delegation
similar to in-addr.arpa, but not going beyond RIRs.

RIRs would populate TXT records with the email address, copying the
data present on the whois database.  I think this would definitely
boost the usability of that data, as it (1) leverages a powerful cache
mechanism, and (2) provides a well-known interface, uniform across all
RIRs.

The global DNS should be named something like _poc.iana.org, or
similar global name.  Thus, we should seek more sponsors.  But do we
ourselves like the idea?

For IPv6 the problem is more difficult but less urgent.  The increased
difficulty lays in the cache blasting that would result if clients
queried a lot of addresses.  There is a proposal[JL] to avoid that by
forcing clients to discover the granularity of an IPv6 allocation and
then query the correct range.  That doubles the number of queries but
increases the likelihood of cache hits.


[JL] John Levine, 27 Nov 2010 23:47:32 -0500
"Implementing IPv6 DNSBLs"
http://www.irtf.org/mail-archive/web/asrg/current/msg16434.html