Network Working Group M. Boucadair Internet-Draft France Telecom Updates: 6153 (if approved) August 02, 2013 Intended status: Standards Track Expires: February 03, 2014 Updates to DHCPv4 and DHCPv6 Options for Access Network Discovery and Selection Function (ANDSF) Discovery draft-boucadair-rfc6153-update-00 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. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on February 03, 2014. Copyright Notice Copyright (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved. Boucadair Expires February 03, 2014 [Page 1] Internet-Draft DHCP for ANDSF August 2013 This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. 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. Nevertheless, IANA assigned mistakenly two DHCPv4 option codes instead of one DHCPv4 option code and a 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 Boucadair Expires February 03, 2014 [Page 2] Internet-Draft DHCP for ANDSF August 2013 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/: Boucadair Expires February 03, 2014 [Page 3] Internet-Draft DHCP for ANDSF August 2013 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 Boucadair Expires February 03, 2014 [Page 4]