Representing IPv6 Zone Identifiers in Uniform Resource Identifiers
draft-ietf-6man-uri-zoneid-00

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Last updated 2012-02-17
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6MAN                                                        B. Carpenter
Internet-Draft                                         Univ. of Auckland
Updates: 3986, 4007 (if approved)                              R. Hinden
Intended status: Standards Track                             Check Point
Expires: August 20, 2012                               February 17, 2012

   Representing IPv6 Zone Identifiers in Uniform Resource Identifiers
                     draft-ietf-6man-uri-zoneid-00

Abstract

   This document describes how the Zone Identifier of an IPv6 scoped
   address can be represented in a Uniform Resource Identifier that
   includes a literal IPv6 address.  It updates RFC 3986 and RFC 4007.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on August 20, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Carpenter & Hinden       Expires August 20, 2012                [Page 1]
Internet-Draft             IPv6 Zone ID in URI             February 2012

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Specification . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 5
   6.  Change log [RFC Editor: Please remove]  . . . . . . . . . . . . 5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     7.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 6

Carpenter & Hinden       Expires August 20, 2012                [Page 2]
Internet-Draft             IPv6 Zone ID in URI             February 2012

1.  Introduction

   [RFC3986] defined how a literal IPv6 address can be represented in
   the "host" part of a Uniform Resource Identifier (URI).
   Subsequently, [RFC4007] extended the text representation of limited-
   scope IPv6 addresses such that a zone identifier may be concatenated
   to an address, for purposes described in that RFC.  Zone identifiers
   are especially useful in contexts where literal addresses are
   typically used, for example during fault diagnosis, when it may be
   essential to specify which interface is used for sending to a link
   local address.  It should be noted that zone identifiers have purely
   local meaning within the host where they are defined, and they are
   completely meaningless for any other host.

   RFC 4007 does not specify how zone identifiers are to be represented
   in URIs.  Practical experience has shown that this feature is useful,
   in particular when using a web browser for debugging with link local
   addresses, but as it is undefined, it is not implemented consistently
   in URI parsers or in browsers.

   This document updates [RFC3986] by adding syntax to allow a zone
   identifier to be included in a literal IPv6 address.  It also
   clarifies some statements in [RFC4007].

   It should be noted that in other contexts than a user interface, a
   zone identifier is mapped into a numeric zone index or interface
   number.  The MIB textual convention [RFC4001] and the socket
   interface [RFC3493] define this as a 32 bit unsigned integer.  The
   mapping between the human-readable zone identifier string and the
   numeric value is a host-specific function that varies between
   operating systems.  The present document is concerned only with the
   human-readable string.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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