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RFC 8222
Title: Selecting Labels for Use with
Conventional DNS and Other Resolution Systems
in DNS-Based Service Discovery
Author: A. Sullivan
Status: Informational
Stream: IETF
Date: September 2017
Mailbox: asullivan@dyn.com
Pages: 11
Characters: 28735
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-dnssd-mdns-dns-interop-04.txt
URL: https://www.rfc-editor.org/info/rfc8222
DOI: 10.17487/RFC8222
Despite its name, DNS-Based Service Discovery (DNS-SD) can use naming
systems other than DNS when looking for services. Moreover, when it
uses DNS, DNS-SD uses the full capability of DNS, rather than using a
subset of available octets. This is of particular relevance where
some environments use DNS labels that conform to Internationalized
Domain Names for Applications (IDNA), and other environments use
labels containing Unicode characters (such as containing octets
corresponding to characters encoded as UTF-8). In order for DNS-SD
to be used effectively in environments where multiple different name
systems and conventions for their operation are in use, it is
important to attend to differences in the underlying technology and
operational environment. This memo presents an outline of the
requirements for the selection of labels for conventional DNS and
other resolution systems when they are expected to interoperate in
this manner.
This document is a product of the Extensions for Scalable DNS Service Discovery Working Group of the IETF.
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