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Service Registration Protocol for DNS-Based Service Discovery

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Expired & archived
Authors Stuart Cheshire , Ted Lemon
Last updated 2018-01-04 (Latest revision 2017-07-03)
Replaced by draft-ietf-dnssd-srp
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The DNS-SD Service Registration Protocol provides a way to perform DNS-Based Service Discovery using only unicast packets. This eliminates the dependency on Multicast DNS as the foundation layer, which has worked well in some environments, like the simplest of home networks, but not in others, like large enterprise networks (where multicast does not scale well to thousands of devices) and mesh networks (where multicast and broadcast are supported poorly, if at all). Broadly speaking, the DNS-SD Service Registration Protocol is DNS Update, with a few additions.


Stuart Cheshire
Ted Lemon

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)