Skip to main content

DHCPv6 Prefix Length Hint Issues

Document Type Replaced Internet-Draft (dhc WG)
Expired & archived
Authors Yong Cui , Tianxiang Li , Cong Liu
Last updated 2016-01-13 (Latest revision 2015-12-02)
Replaced by draft-ietf-dhc-dhcpv6-prefix-length-hint-issue
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Adopted by a WG
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-dhc-dhcpv6-prefix-length-hint-issue
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


DHCPv6 Prefix Delegation [RFC3633] allows a requesting router to include a prefix-length hint value in the IA_PD option to indicate a preference for the size of the prefix to be delegated, but is unclear about how the requesting router and delegating router should act in different situations involving the prefix-length hint. This document provides a summary of the existing problems with the prefix-length hint and guidance on what the requesting router and delegating router could do in different situations.


Yong Cui
Tianxiang Li
Cong Liu

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)