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<!DOCTYPE rfc SYSTEM "rfc2629.dtd">
<?rfc toc="yes"?>
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<?rfc tocdepth="3"?>
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<rfc category="std" docName="draft-boucadair-rfc6153-update-01"
     ipr="trust200902" updates="6153">
  <front>
    <title abbrev="DHCP for ANDSF">Updates to DHCPv4 and DHCPv6 Options for
    Access Network Discovery and Selection Function (ANDSF) Discovery</title>

    <author fullname="Mohamed Boucadair" initials="M." surname="Boucadair">
      <organization>France Telecom</organization>

      <address>
        <postal>
          <street></street>

          <city>Rennes</city>

          <region></region>

          <code>35000</code>

          <country>France</country>
        </postal>

        <email>mohamed.boucadair@orange.com</email>
      </address>
    </author>

    <date />

    <abstract>
      <t>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.</t>
    </abstract>

    <note title="Requirements Language">
      <t>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 <xref
      target="RFC2119">RFC 2119</xref>.</t>
    </note>
  </front>

  <middle>
    <section anchor="introduction" title="Introduction">
      <t><xref target="RFC6153"></xref> defines a DHCPv4 option (called
      OPTION-IPv4_Address-ANDSF) <xref target="RFC2131"></xref> and a DHCPv6
      option (called OPTION-IPv6_Address-ANDSF) <xref target="RFC3315"></xref>
      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 <xref target="RFC6153"></xref> was
      ambiguous, and as a result two DHCPv4 option codes were assigned instead
      of one DHCPv4 option code and one DHCPv6 option code. </t>

      <t>This document updates <xref target="RFC6153"></xref> by assigning a
      code for DHCPv6 option for ANDSF and withdrawing an already assigned
      DHCPv4 option code.</t>
    </section>

    <section title="Update to RFC 6153">
      <t>In order to be backward compatible with existing implementations,
      IANA MUST assign 143 as a DHCPv6 option code for
      OPTION-IPv6_Address-ANDSF.</t>

      <t>This document changes section 6 of <xref target="RFC6153"></xref> as
      follows:</t>

      <t>OLD:</t>

      <t><figure>
          <artwork><![CDATA[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

 ANDSF IPv6 Address Option for DHCPv6 (OPTION-IPv6_Address-ANDSF) 143]]></artwork>
        </figure>NEW:</t>

      <t><figure>
          <artwork><![CDATA[ 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]]></artwork>
        </figure></t>

      <t></t>
    </section>

    <section anchor="security" title="Security Considerations">
      <t>Security considerations are discussed in <xref
      target="RFC6153"></xref>.</t>
    </section>

    <section anchor="IANA" title="IANA Considerations">
      <t></t>

      <section anchor="iana6" title="DHCPv6 Option">
        <t>IANA is requested to assign the following new DHCPv6 Option Code in
        the registry maintained in
        http://www.iana.org/assignments/dhcpv6-parameters:</t>

        <texttable style="headers">
          <ttcol align="right">Option Name</ttcol>

          <ttcol>Value</ttcol>

          <c>OPTION-IPv6_Address-ANDSF</c>

          <c>143</c>
        </texttable>

        <t></t>
      </section>

      <section anchor="iana4" title="DHCPv4 Option">
        <t>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/:</t>

        <texttable style="headers">
          <ttcol align="right">Option Name</ttcol>

          <ttcol>Value</ttcol>

          <c>OPTION-IPv6_Address-ANDSF</c>

          <c>143</c>
        </texttable>

        <t></t>
      </section>
    </section>
  </middle>

  <back>
    <references title="Normative References">
      <?rfc include='reference.RFC.2119'?>

      <?rfc include='reference.RFC.6153'?>

      <?rfc include='reference.RFC.3315'?>

      <?rfc include='reference.RFC.2131'?>
    </references>
  </back>
</rfc>
