Draft: draft-ietf-add-ddr

Commentary: I have committed all request changes . Thank you for the refinements . 
 The IANA Functions Operator has a question about one of the actions requested in the IANA Considerations section of this document . The IANA Functions Operator understands that , upon approval of this document , there are two actions which we must complete . First , IANA understands that this document calls for the addition of " " to the Special - Use Domain Names ( SUDN ) registry established by RFC6761 . RFC6761 specifically requires that any request for a Special - Use Domain Name needs to contain a subsection of the " IANA Considerations " section titled Domain Name Reservation Considerations . The current draft does not have such a section . IANA Question --Could the authors either conform to the requirements of RFC6761 or provide explicit guidance as to why that section is not appropriate ? Second , in the Transport - Independent Locally - Served DNS Zone Registry on the Locally - Served DNS Zones registry page located at : a new registration will be made as follows : Zone : Description : DNS Resolver Special - Use Domain Reference : [ RFC - to - be ] The IANA Functions Operator understands that these are the only actions required to be completed upon approval of this document . Note : The actions requested in this document will not be completed until the document has been approved for publication as an RFC . This message is meant only to confirm the list of actions that will be performed . For definitions of IANA review states , please see :
Are human users expected to recognize these names as special and
use them differently?  In what way?
No.  This name is used automatically by DNS stub resolvers running on
client devices on behalf of users, and users will never see this name
directly.
Are writers of application software expected to make their
software recognize these names as special and treat them
differently?  In what way?
No.  There is no use case where a non-DNS application (covered by the
next question) would need to use this name.
Are writers of name resolution APIs and libraries expected to make
their software recognize these names as special and treat them
differently?  If so, how?
Yes. DNS client implementors are expected to use this name when
querying for a resolver's properties instead of records for the name
itself.  DNS servers are expected to respond to queries for this name
with their own properties instead of checking the matching zone as it
would for normal domain names.
Are developers of caching domain name servers expected to make
their implementations recognize these names as special and treat
them differently?  If so, how?
Yes. Caching domain name servers should not forward queries for this
name to avoid causing validation failures due to IP address mismatch.
Are developers of authoritative domain name servers expected to
make their implementations recognize these names as special and
treat them differently?  If so, how?
No.  DDR is designed for use by recursive resolvers.  Theoretically,
an authoritative server could choose to support this name if it wants
to advertise support for encrypted DNS protocols over plain-text DNS,
but that scenario is covered by other work in the IETF DNSOP working
group.
Does this reserved Special-Use Domain Name have any potential
impact on DNS server operators?  If they try to configure their
authoritative DNS server as authoritative for this reserved name,
will compliant name server software reject it as invalid?  Do DNS
server operators need to know about that and understand why?  Even
if the name server software doesn't prevent them from using this
reserved name, are there other ways that it may not work as
expected, of which the DNS server operator should be aware?
This name is locally served, and any resolver which supports this
name should never forward the query.  DNS server operators should be
aware that records for this name will be used by clients to modify
the way they connect to their resolvers.
How should DNS Registries/Registrars treat requests to register
this reserved domain name?  Should such requests be denied?
Should such requests be allowed, but only to a specially-
designated entity?