DHCP Options for Protocol for Carrying Authentication for Network Access (PANA) Authentication Agents
RFC 5192

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Network Working Group                                          L. Morand
Request for Comments: 5192                            France Telecom R&D
Category: Standards Track                                       A. Yegin
                                                                 Samsung
                                                                S. Kumar
                                                       Tech Mahindra Ltd
                                                          S. Madanapalli
                                                                 Samsung
                                                                May 2008

       DHCP Options for Protocol for Carrying Authentication for
              Network Access (PANA) Authentication Agents

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Abstract

   This document defines new DHCPv4 and DHCPv6 options that contain a
   list of IP addresses to locate one or more PANA (Protocol for
   carrying Authentication for Network Access) Authentication Agents
   (PAAs).  This is one of the methods that a PANA Client (PaC) can use
   to locate PAAs.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
   2.  Specification of Requirements . . . . . . . . . . . . . . . . . 2
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 2
   4.  PANA Authentication Agent DHCPv4 Option . . . . . . . . . . . . 3
   5.  PANA Authentication Agent DHCPv6 Option . . . . . . . . . . . . 4
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 5
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 6

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RFC 5192                    PAA DHCP Options                    May 2008

1.  Introduction

   The Protocol for carrying Authentication for Network Access (PANA)
   [RFC5191] defines a new Extensible Authentication Protocol (EAP)
   [RFC3748] lower layer that uses IP between the protocol end-points.

   The PANA protocol is run between a PANA Client (PaC) and a PANA
   Authentication Agent (PAA) in order to perform authentication and
   authorization for the network access service.

   This document specifies DHCPv4 [RFC2131] and DHCPv6 [RFC3315] options
   that allow PANA clients (PaCs) to discover PANA Authentication Agents
   (PAAs).  This is one of the methods for locating PAAs.

   The DHCP options defined in this document are used only as a PAA
   discovery mechanism.  These DHCP options MUST NOT be used to perform
   any negotiation of the use of PANA between the PaC and a PAA.

2.  Specification of Requirements

   In this document, several words are used to signify the requirements
   of the specification.  These words are often capitalized.  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 [RFC2119].

3.  Terminology

   This document uses the DHCP terminology defined in [RFC2131],
   [RFC2132], and [RFC3315].

   This document uses the PANA terminology defined in [RFC5191].  In
   particular, the following terms are defined:

      PANA Client (PaC):

         The client side of the protocol that resides in the access
         device (e.g., laptop, PDA, etc.).  It is responsible for
         providing the credentials in order to prove its identity
         (authentication) for network access authorization.  The PaC and
         the EAP peer are co-located in the same access device.

      PANA Authentication Agent (PAA):

         The protocol entity in the access network whose responsibility
         it is to verify the credentials provided by a PANA client (PaC)
         and authorize network access to the access device.  The PAA and

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RFC 5192                    PAA DHCP Options                    May 2008

         the EAP authenticator (and optionally the EAP server) are
         colocated in the same node.

4.  PANA Authentication Agent DHCPv4 Option

   This DHCPv4 option carries a list of 32-bit (binary) IPv4 addresses
   indicating PANA Authentication Agents (PAAs) available to the PANA
   client (PaC).

   The DHCPv4 option for PANA Authentication Agent has the format shown