Multi-requirement Extensions for Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
draft-ren-dhc-mredhcpv6-00

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Internet Engineering Task Force                                   G. Ren
Internet-Draft                                                     L. He
Intended status: Standards Track                                  Y. Liu
Expires: September 14, 2017                          Tsinghua University
                                                          March 13, 2017

Multi-requirement Extensions for Dynamic Host Configuration Protocol for
                             IPv6 (DHCPv6)
                       draft-ren-dhc-mredhcpv6-00

Abstract

   This memo provides multi-requirement extensions for DHCPv6, which
   allow hosts to generate or fetch addresses according to the user or
   network requirements, and DHCP servers to centrally manage all types
   of addresses including SLAAC-configured addresses, DHCPv6-configured
   addresses, and manual-configured addresses.  Moreover, a general
   extension for address generation is designed to allow multiple types
   of requirements to be introduced into the DHCPv6 exchanges.

Status of This Memo

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Ren, et al.            Expires September 14, 2017               [Page 1]
Internet-Draft   multi-requirement extensions for DHCPv6      March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Address Configuration Methods . . . . . . . . . . . . . .   4
     3.2.  Address Generation Mechanisms . . . . . . . . . . . . . .   4
     3.3.  Determinants of IPv6 Address Allocations  . . . . . . . .   5
       3.3.1.  Routers . . . . . . . . . . . . . . . . . . . . . . .   5
       3.3.2.  DHCPv6 Servers  . . . . . . . . . . . . . . . . . . .   5
       3.3.3.  Hosts . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.4.  Address-Related Network Entities  . . . . . . . . . . . .   5
     3.5.  Current Problems  . . . . . . . . . . . . . . . . . . . .   6
       3.5.1.  Mixed Operation Problem . . . . . . . . . . . . . . .   6
       3.5.2.  Synchronization Problem . . . . . . . . . . . . . . .   6
       3.5.3.  Efficiency Problem  . . . . . . . . . . . . . . . . .   7
       3.5.4.  General Model Problem . . . . . . . . . . . . . . . .   7
   4.  Design Goals  . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  General Structures  . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  General Address Generation Type . . . . . . . . . . . . .   8
     5.2.  Uniform Address Storage Structure . . . . . . . . . . . .   8
   6.  Solutions . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Sub-solution for DHCPv6 . . . . . . . . . . . . . . . . .   9
       6.1.1.  Extension of DHCPv6 Options . . . . . . . . . . . . .   9
         6.1.1.1.  Address Generation Mechanism Type Option  . . . .   9
         6.1.1.2.  Address Generation Requiring Parameters Option  .  11
       6.1.2.  Extension of DHCPv6 Exchange Process  . . . . . . . .  12
         6.1.2.1.  Overview  . . . . . . . . . . . . . . . . . . . .  12
         6.1.2.2.  Detailed Exchanges  . . . . . . . . . . . . . . .  13
       6.1.3.  Extension of External Service Result Fetching Process  14
         6.1.3.1.  External Service Request Message  . . . . . . . .  16
         6.1.3.2.  External Service Reply Message  . . . . . . . . .  16
     6.2.  Sub-solution for SLAAC  . . . . . . . . . . . . . . . . .  16
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