DHCPv6 Extension Practices and Considerations
draft-ietf-dhc-problem-statement-of-mredhcpv6-05
Dynamic Host Configuration (DHC) G. Ren
Internet-Draft L. He
Intended status: Informational Y. Liu
Expires: November 12, 2020 Tsinghua University
May 11, 2020
DHCPv6 Extension Practices and Considerations
draft-ietf-dhc-problem-statement-of-mredhcpv6-05
Abstract
The manageability, security, privacy protection, and traceability 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
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time. It is inappropriate to use Internet-Drafts as reference
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This Internet-Draft will expire on November 12, 2020.
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Ren, et al. Expires November 12, 2020 [Page 1]
Internet-Draft problem statement of mredhcpv6 May 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Current Extension Practices . . . . . . . . . . . . . . . . . 3
3.1. Standardized and Non-standardized DHCPv6 Extension Cases 3
3.2. Current DHCPv6 Server Software Cases . . . . . . . . . . 4
4. Extension Discussion . . . . . . . . . . . . . . . . . . . . 4
4.1. DHCPv6 General Model . . . . . . . . . . . . . . . . . . 4
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 . . . . . . . . . . . . 6
5. Extension Cases . . . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Normative References . . . . . . . . . . . . . . . . . . 8
9.2. Informative References . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12
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)
[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
DHCPv6 effectively. The extensions to DHCPv6 can be various
according to multiple and varied requirements. The goal of multi-
requirement extensions for DHCPv6 is to use simple interfaces to
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