DHCPv6 Extension Practices and Considerations
draft-ietf-dhc-problem-statement-of-mredhcpv6-06

Document Type Active Internet-Draft (dhc WG)
Authors Ren Gang  , Lin He  , Ying Liu 
Last updated 2020-11-15
Replaces draft-ren-dhc-problem-statement-of-mredhcpv6
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Dynamic Host Configuration (DHC)                                  G. Ren
Internet-Draft                                                     L. He
Intended status: Informational                                    Y. Liu
Expires: May 19, 2021                                Tsinghua University
                                                       November 15, 2020

             DHCPv6 Extension Practices and Considerations
            draft-ietf-dhc-problem-statement-of-mredhcpv6-06

Abstract

   IP addresses as the communication identifier bear more and more
   properties to meet different requirements.  The privacy protection,
   accountability, security, and manageability of networks can be
   supported by extending the DHCPv6 protocol according to requirements.
   This document provides current extension practices and typical DHCPv6
   server softwares on extensions, defines a DHCPv6 general model,
   discusses some extension points, and presents extension cases.

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
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   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on May 19, 2021.

Copyright Notice

   Copyright (c) 2020 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
   Provisions Relating to IETF Documents
   (https://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

Ren, et al.               Expires May 19, 2021                  [Page 1]
Internet-Draft       problem statement of mredhcpv6        November 2020

   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Current Extension Practices . . . . . . . . . . . . . . . . .   4
     3.1.  Standardized and Non-standardized DHCPv6 Extension Cases    4
     3.2.  Current DHCPv6 Server Software Cases  . . . . . . . . . .   4
   4.  Extension Discussion  . . . . . . . . . . . . . . . . . . . .   5
     4.1.  DHCPv6 General Model  . . . . . . . . . . . . . . . . . .   5
     4.2.  Extension Points  . . . . . . . . . . . . . . . . . . . .   5
       4.2.1.  Messages  . . . . . . . . . . . . . . . . . . . . . .   5
       4.2.2.  Options . . . . . . . . . . . . . . . . . . . . . . .   6
       4.2.3.  Message Processing Functions  . . . . . . . . . . . .   6
       4.2.4.  Address Generation Mechanisms . . . . . . . . . . . .   7
     4.3.  Extension Principles  . . . . . . . . . . . . . . . . . .   8
   5.  Extension Cases . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   The IP address plays a significant role in the communication on the
   Internet.  IP address generation is also closely related to the
   privacy protection, accountability, security, and manageability of
   networks.  Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
   [RFC8415] is a critical network protocol that can be used to
   dynamically provide IPv6 addresses and other network configuration
   parameters to IPv6 nodes.  DHCPv6 continues to be extended and
   improved through new options, protocols, and message processing
   mechanisms.

   Although DHCPv6 provides more and more comprehensive functionalities
   and DHCPv6 server softwares also provide extension interfaces to
   allow administrators to alter and customize the way how they handle
   and respond to DHCPv6 messages, there is still a lack of
   comprehensive insight into where and how to conduct extensions in
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