draft-ietf-dnssd-hybrid-06.txt   draft-ietf-dnssd-hybrid-07.txt 
Internet Engineering Task Force S. Cheshire Internet Engineering Task Force S. Cheshire
Internet-Draft Apple Inc. Internet-Draft Apple Inc.
Intended status: Standards Track March 13, 2017 Intended status: Standards Track September 13, 2017
Expires: September 14, 2017 Expires: March 17, 2018
Discovery Proxy for Multicast DNS-Based Service Discovery Discovery Proxy for Multicast DNS-Based Service Discovery
draft-ietf-dnssd-hybrid-06 draft-ietf-dnssd-hybrid-07
Abstract Abstract
This document specifies a mechanism that uses Multicast DNS to This document specifies a mechanism that uses Multicast DNS to
automatically populate the wide-area unicast Domain Name System automatically populate the wide-area unicast Domain Name System
namespace with records describing devices and services found on the namespace with records describing devices and services found on the
local link. local link.
Status of This Memo Status of This Memo
skipping to change at page 1, line 33 skipping to change at page 1, line 33
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 14, 2017. This Internet-Draft will expire on March 17, 2018.
Copyright Notice Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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expensive multicast traffic, but limits the discoverability of expensive multicast traffic, but limits the discoverability of
services. Using a very large local link with thousands of hosts services. Using a very large local link with thousands of hosts
enables better service discovery, but at the cost of larger amounts enables better service discovery, but at the cost of larger amounts
of multicast traffic. of multicast traffic.
Performing DNS-Based Service Discovery using purely Unicast DNS is Performing DNS-Based Service Discovery using purely Unicast DNS is
more efficient and doesn't require excessively large multicast more efficient and doesn't require excessively large multicast
domains, but requires that the relevant data be available in the domains, but requires that the relevant data be available in the
Unicast DNS namespace. The Unicast DNS namespace in question could Unicast DNS namespace. The Unicast DNS namespace in question could
fall within a traditionally assigned globally unique domain name, or fall within a traditionally assigned globally unique domain name, or
could use a private local unicast domain name such as ".home" could use a private local unicast domain name such as ".home.arpa"
[HOME].) [HOME].)
In the DNS-SD specification [RFC6763], Section 10 ("Populating the In the DNS-SD specification [RFC6763], Section 10 ("Populating the
DNS with Information") discusses various possible ways that a DNS with Information") discusses various possible ways that a
service's PTR, SRV, TXT and address records can make their way into service's PTR, SRV, TXT and address records can make their way into
the Unicast DNS namespace, including manual zone file configuration the Unicast DNS namespace, including manual zone file configuration
[RFC1034] [RFC1035], DNS Update [RFC2136] [RFC3007] and proxies of [RFC1034] [RFC1035], DNS Update [RFC2136] [RFC3007] and proxies of
various kinds. various kinds.
Making the relevant data available in the Unicast DNS namespace by Making the relevant data available in the Unicast DNS namespace by
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Interchange", RFC 5198, DOI 10.17487/RFC5198, March 2008, Interchange", RFC 5198, DOI 10.17487/RFC5198, March 2008,
<http://www.rfc-editor.org/info/rfc5198>. <http://www.rfc-editor.org/info/rfc5198>.
[RFC6762] Cheshire, S. and M. Krochmal, "Multicast DNS", RFC 6762, [RFC6762] Cheshire, S. and M. Krochmal, "Multicast DNS", RFC 6762,
December 2012. December 2012.
[RFC6763] Cheshire, S. and M. Krochmal, "DNS-Based Service [RFC6763] Cheshire, S. and M. Krochmal, "DNS-Based Service
Discovery", RFC 6763, December 2012. Discovery", RFC 6763, December 2012.
[PUSH] Pusateri, T. and S. Cheshire, "DNS Push Notifications", [PUSH] Pusateri, T. and S. Cheshire, "DNS Push Notifications",
draft-ietf-dnssd-push-09 (work in progress), October 2016. draft-ietf-dnssd-push-12 (work in progress), July 2017.
13.2. Informative References 13.2. Informative References
[HOME] Cheshire, S., "Special Use Top Level Domain 'home'", [HOME] Pfister, P. and T. Lemon, "Special Use Domain
draft-cheshire-homenet-dot-home (work in progress), '.home.arpa'", draft-ietf-homenet-dot-07 (work in
November 2015. progress), June 2017.
[IPR2119] "Apple Inc.'s Statement about IPR related to Hybrid [IPR2119] "Apple Inc.'s Statement about IPR related to Hybrid
Unicast/Multicast DNS-Based Service Discovery", Unicast/Multicast DNS-Based Service Discovery",
<https://datatracker.ietf.org/ipr/2119/>. <https://datatracker.ietf.org/ipr/2119/>.
[ohp] "Discovery Proxy (Hybrid Proxy) implementation for [ohp] "Discovery Proxy (Hybrid Proxy) implementation for
OpenWrt", <https://github.com/sbyx/ohybridproxy/>. OpenWrt", <https://github.com/sbyx/ohybridproxy/>.
[LLQ] Sekar, K., "DNS Long-Lived Queries", draft-sekar-dns- [LLQ] Sekar, K., "DNS Long-Lived Queries", draft-sekar-dns-
llq-01 (work in progress), August 2006. llq-01 (work in progress), August 2006.
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