Internet DRAFT - draft-boucadair-rfc6153-update
draft-boucadair-rfc6153-update
Network Working Group M. Boucadair
Internet-Draft France Telecom
Updates: 6153 (if approved) August 21, 2013
Intended status: Standards Track
Expires: February 22, 2014
Updates to DHCPv4 and DHCPv6 Options for Access Network Discovery and
Selection Function (ANDSF) Discovery
draft-boucadair-rfc6153-update-01
Abstract
This document updates RFC 6153 by correcting IANA allocations made
for DHCPv4 and DHCPv6 options for Access Network Discovery and
Selection Function (ANDSF) Discovery. This document assigns a code
for DHCPv6 option for ANDSF and withdraws an already assigned DHCPv4
option code.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on February 22, 2014.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Update to RFC 6153 . . . . . . . . . . . . . . . . . . . . . 2
3. Security Considerations . . . . . . . . . . . . . . . . . . . 3
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4.1. DHCPv6 Option . . . . . . . . . . . . . . . . . . . . . . 3
4.2. DHCPv4 Option . . . . . . . . . . . . . . . . . . . . . . 3
5. Normative References . . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
[RFC6153] defines a DHCPv4 option (called OPTION-IPv4_Address-ANDSF)
[RFC2131] and a DHCPv6 option (called OPTION-IPv6_Address-ANDSF)
[RFC3315] to enable a mobile node to discover Access Network
Discovery and Selection Function (ANDSF) entities in an IP network.
Unfortunately, the IANA considerations section in [RFC6153] was
ambiguous, and as a result two DHCPv4 option codes were assigned
instead of one DHCPv4 option code and one DHCPv6 option code.
This document updates [RFC6153] by assigning a code for DHCPv6 option
for ANDSF and withdrawing an already assigned DHCPv4 option code.
2. Update to RFC 6153
In order to be backward compatible with existing implementations,
IANA MUST assign 143 as a DHCPv6 option code for OPTION-IPv6_Address-
ANDSF.
This document changes section 6 of [RFC6153] as follows:
OLD:
This document defines two new DHCP options as described in Sections 2
and 3:
ANDSF IPv4 Address Option for DHCPv4 (OPTION-IPv4_Address-ANDSF) 142
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ANDSF IPv6 Address Option for DHCPv6 (OPTION-IPv6_Address-ANDSF) 143
NEW:
IANA has assigned the following new DHCPv6 Option Code in the
registry maintained in
http://www.iana.org/assignments/dhcpv6-parameters:
Option Name Value
------------------------- -----
OPTION-IPv6_Address-ANDSF 143
IANA has assigned the following new DHCPv4 Option Code in the
registry maintained in http://www.iana.org/assignments/bootp-dhcp-
parameters/:
Option Name Value
------------------------- -----
OPTION-IPv4_Address-ANDSF 142
3. Security Considerations
Security considerations are discussed in [RFC6153].
4. IANA Considerations
4.1. DHCPv6 Option
IANA is requested to assign the following new DHCPv6 Option Code in
the registry maintained in http://www.iana.org/assignments/
dhcpv6-parameters:
Option Name Value
------------------------- -----
OPTION-IPv6_Address-ANDSF 143
4.2. DHCPv4 Option
IANA is requested to return the following value to the available
DHCPv4 Option Codes space maintained in http://www.iana.org/
assignments/bootp-dhcp-parameters/:
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Option Name Value
------------------------- -----
OPTION-IPv6_Address-ANDSF 143
5. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2131] Droms, R., "Dynamic Host Configuration Protocol", RFC
2131, March 1997.
[RFC3315] Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C.,
and M. Carney, "Dynamic Host Configuration Protocol for
IPv6 (DHCPv6)", RFC 3315, July 2003.
[RFC6153] Das, S. and G. Bajko, "DHCPv4 and DHCPv6 Options for
Access Network Discovery and Selection Function (ANDSF)
Discovery", RFC 6153, February 2011.
Author's Address
Mohamed Boucadair
France Telecom
Rennes 35000
France
Email: mohamed.boucadair@orange.com
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