[dns-operations] Missing .us and GTLD records??

Paul Vixie vixie at isc.org
Sat May 22 02:30:04 UTC 2010

> Date: Fri, 21 May 2010 14:52:33 -0400 (EDT)
> From: Luis Uribarri <uribarri at alum.mit.edu>

> On Fri, 21 May 2010, Paul Vixie wrote:

> > ... please come back when you have read RFC 1035 7.2 and you know what
> > an SLIST is and how it's built/used.
> Believe it or not, some resolvers do not actually do this, (or at least
> do not appear to act in this way)

server implementors and operators have a reasonable expectation that 
requestors will act in this way. especially since BIND has always followed
the RFC in this way (from BIND4 through BIND8 to BIND9 and soon BIND10)
and so since 1986 the dominant recursive DNS requestor on the internet
has done exactly what [RFC 1035 7.2] says. i will be VERY surprised if ANY
authority server operator is willing to decide, "well, someone somewhere
might not be following the RFC in this regard, so i ought to be cautious."

however, you make an intriging point. you seem to be aware of some resolver
(or "recursive requestor" or whatever) that is modern enough to know what
IPv6 is and yet unaware of what [RFC 1035 7.2] says. i'd argue, a priori,
that such a resolver is "in the wrong" and need not be considered. but, if
you can explain further, then perhaps RFC 1035 can be updated, after which
BIND would follow the new specification, and server/zone operators the world
over would know how to control their NS RRsets. please share your data.

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