Problem Statement of Multi-requirement Extensions for Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
draft-ren-dhc-problem-statement-of-mredhcpv6-01

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01

Dynamic Host Configuration (DHC)                                  G. Ren
Internet-Draft                                                     L. He
Intended status: Informational                                    Y. Liu
Expires: September 11, 2019                          Tsinghua University
                                                          March 10, 2019

   Problem Statement of Multi-requirement Extensions for Dynamic Host
                Configuration Protocol for IPv6 (DHCPv6)
            draft-ren-dhc-problem-statement-of-mredhcpv6-01

Abstract

   The manageability, security, privacy protection, and traceability of
   networks can be supported by extending DHCPv6 protocol.  This
   document analyzes current extension practices and typical DHCP server
   software on extensions, defines a DHCP general model, discusses some
   extension points, and present 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
   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 September 11, 2019.

Copyright Notice

   Copyright (c) 2019 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
   (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

Ren, et al.            Expires September 11, 2019               [Page 1]
Internet-Draft       problem statement of mredhcpv6           March 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Current Extension Practices  . . . . . . . . . . . . . . . . .  4
     3.1.  Standardized and Non-standardized DHCPv6 Extension
           Cases  . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     3.2.  Current DHCPv6 Server Software Cases . . . . . . . . . . .  4
       3.2.1.  Cisco Prime Network Registrar DHCP Server
               Extension APIs . . . . . . . . . . . . . . . . . . . .  4
       3.2.2.  Kea DHCP Hook Mechanisms . . . . . . . . . . . . . . .  5
   4.  Problem Statement  . . . . . . . . . . . . . . . . . . . . . .  5
     4.1.  DHCP General Model . . . . . . . . . . . . . . . . . . . .  5
     4.2.  Extension Discussion . . . . . . . . . . . . . . . . . . .  6
       4.2.1.  DHCP Messages  . . . . . . . . . . . . . . . . . . . .  6
       4.2.2.  Options  . . . . . . . . . . . . . . . . . . . . . . .  6
       4.2.3.  Message Processing Functions . . . . . . . . . . . . .  7
       4.2.4.  Address Generation Mechanisms  . . . . . . . . . . . .  7
       4.2.5.  Extension Principles . . . . . . . . . . . . . . . . .  7
   5.  Extensions Cases . . . . . . . . . . . . . . . . . . . . . . .  8
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . .  8
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  8
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  8
   9.  Normative References . . . . . . . . . . . . . . . . . . . . .  8
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11

Ren, et al.            Expires September 11, 2019               [Page 2]
Internet-Draft       problem statement of mredhcpv6           March 2019

1.  Introduction

   The IP address plays a significant role in the communication of the
   Internet.  IP address generation is also closely related to the
   manageability, security, privacy protection, and traceability of
   networks.  Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
   [I-D.ietf-dhc-rfc3315bis] is an important network protocol that can
   be used to dynamically provide IPv6 addresses and other network
   configuration parameters to IPv6 hosts.  Actually, DHCPv6 continues
   to be extended and improved through new options, protocols or message
   processing mechanisms.

   Although DHCPv6 provides more and more comprehensive functionality
   and DHCPv6 server software also provides extension interfaces to