Network Working Group P. Hoffman
Updates: RFC 8499 (if approved) April 29, 2019
Intended status: Standards Track
Expires: October 31, 2019
Terminology for DNS Transports and Location
This document adds terms and abbreviations to "DNS Terminology" (RFC
8499) that relate to DNS running over various transports, as well as
terms and abbreviations for DNS resolution at traditional and non-
[[ This is an early attempt at these terms. They will probably be
improved over time. ]]
Status of This Memo
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Table of Contents
1. New Terms and Abbreviations . . . . . . . . . . . . . . . . . 2
2. Normative References . . . . . . . . . . . . . . . . . . . . 3
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 3
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 3
1. New Terms and Abbreviations
The following terms and abbreviations are added to Section 6 of
DNS-over-TLS (DoT): DNS over TLS as defined in [RFC7858] and its
DNS-over-HTTPS (DoH): DNS over HTTPS as defined in [RFC8484] and its
Do53: DNS over UDP or TCP as defined in [RFC1035] and its
successors. Do53 applies to DNS communication between stub
resolvers and recursive resolvers, and between recursive resolvers
and authoritative servers.
Recursive DoT (RDoT): RDoT specifically means DNS-over-TLS for
transport between stub resolvers and recursive resolvers. This
term is necessary because it is expected that DNS-over-TLS will
later be defined as a transport between recursive resolvers and
Authoritative DoT (ADoT): If DNS-over-TLS is later defined as the
transport between recursive resolvers and authoritative servers,
ADoT specifically means DNS-over-TLS for transport between
recursive resolvers and authoritative servers.
Applications Doing DNS (ADD): Applications that act as stub
resolvers. This is in contrast to the way that applications
traditionally have gotten DNS information, which is to use system
calls to the operating system on the computer, and have the
operating system act as the stub resolver. "Applications Doing
DNS" is not limited to particular transports: it applies equally
to DNS-over-TLS, DNS-over-HTTPS, Do53, and future DNS transports.
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( Temporary note, to be removed before publication as an RFC:
there is a mailing list discussing Applications Doing DNS at
2. Normative References
[RFC1035] Mockapetris, P., "Domain names - implementation and
specification", STD 13, RFC 1035, DOI 10.17487/RFC1035,
November 1987, <https://www.rfc-editor.org/info/rfc1035>.
[RFC7858] Hu, Z., Zhu, L., Heidemann, J., Mankin, A., Wessels, D.,
and P. Hoffman, "Specification for DNS over Transport
Layer Security (TLS)", RFC 7858, DOI 10.17487/RFC7858, May
[RFC8484] Hoffman, P. and P. McManus, "DNS Queries over HTTPS
(DoH)", RFC 8484, DOI 10.17487/RFC8484, October 2018,
[RFC8499] Hoffman, P., Sullivan, A., and K. Fujiwara, "DNS
Terminology", BCP 219, RFC 8499, DOI 10.17487/RFC8499,
January 2019, <https://www.rfc-editor.org/info/rfc8499>.
Sara Dickinson contributed ideas before the first draft was
published. Warren Kumari contributed the idea for "Applications
Doing DNS" as a term. Many people contributed the idea that it is
better to define terms rather than just acronyms.
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