Problem Statement of Multi-requirement Extensions for Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
draft-ietf-dhc-problem-statement-of-mredhcpv6-00
Dynamic Host Configuration (DHC) G. Ren
Internet-Draft L. He
Intended status: Informational Y. Liu
Expires: November 24, 2019 Tsinghua University
May 23, 2019
Problem Statement of Multi-requirement Extensions for Dynamic Host
Configuration Protocol for IPv6 (DHCPv6)
draft-ietf-dhc-problem-statement-of-mredhcpv6-00
Abstract
The manageability, security, privacy protection, and traceability of
networks can be supported by extending DHCPv6 protocol according to
requirements. 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
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This Internet-Draft will expire on November 24, 2019.
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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
3.2.1. Cisco Prime Network Registrar DHCP Server Extension
APIs . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2.2. Kea DHCP Hook Mechanisms . . . . . . . . . . . . . . 4
4. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 5
4.1. DHCP General Model . . . . . . . . . . . . . . . . . . . 5
4.2. Extension Discussion . . . . . . . . . . . . . . . . . . 5
4.2.1. DHCP Messages . . . . . . . . . . . . . . . . . . . . 5
4.2.2. Options . . . . . . . . . . . . . . . . . . . . . . . 6
4.2.3. Message Processing Functions . . . . . . . . . . . . 6
4.2.4. Address Generation Mechanisms . . . . . . . . . . . . 6
4.2.5. Extension Principles . . . . . . . . . . . . . . . . 7
5. Extension Cases . . . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8
9. Normative References . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
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 an important network protocol that can be used to
dynamically provide IPv6 addresses and other network configuration
parameters to IPv6 nodes. Actually, DHCPv6 continues to be extended
and improved through new options, protocols or message processing
mechanisms.
Although DHCPv6 provides more and more comprehensive functionalities
and DHCPv6 server software also provides 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 a general
insight into where and how to conduct extensions in DHCPv6
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