This document describes the Dynamic Host Configuration Protocol for
IPv6 (DHCPv6). It updates the text from RFC3315, the original
DHCPv6 specification, and incorporates prefix delegation (RFC3633),
stateless DHCPv6 (RFC3736), an option to specify an upper bound for
how long a client should wait before refreshing information
(RFC4242), a mechanism for throttling DHCPv6 clients when DHCPv6
service is not available (RFC7083), and clarifies the interactions
between modes of operation (RFC7550). As such, this document
obsoletes RFC3315, RFC3633, RFC3736, RFC4242, RFC7083, and RFC7550.
Working Group Summary
The dhc WG undertook the development of rfc3315bis to move
DHCPv6/RFC3315 to Internet Standard. The process was scoped to do
minimal updates to RFC 3315 and incorporate a few core followup RFCs
into rfc3315bis for publication as an Internet Standard. The bulk
of the work on rfc3315bis was done be a design team, with frequent
reports back to the full dhc WG.
Because there are some minor protocol changes from previous RFCs in
rfc3315bis, and no implementation experience with the protocol as
specified in rfc3315bis, the dhc Working Group requests that
rfc3315bis be published as Proposed Standard.
There were no points or decisions about rfc3315bis that caused
controversy or for which consensus was determined to be particularly
rough. The origin documents, RFC 3315 et al., were sufficiently
well-written and have sufficient implementation and deployment
experience to minimize the discussion about rfc3315bis.
Section 1 summarizes the relationship of rfc3315bis to several RFCs
that define the current DHCPv6 specification. Appendix A of
rfc3315bis lists the changes in the DHCPv6 specification relative to
rfc3315bis has received significant review by the dhc Working Group
in two Working Group last calls. Summaries of the issues raised
during the last calls is available at:
The Acknowledgments section cites individuals who contributed
thorough and helpful reviews.
There are no implementations of DHCPv6 that include the changes to
the protocol specified in rfc3315bis. There are, of course, many
implementations of DHCPv6 based on RFC 3315 and subsequent RFCs.
rfc3315bis incorporates updates to the DHCPv6 specification based on
interop tests among several DHCPv6 implementations. At least four
vendors are interested in updating their implementations: Cisco,
Huawei, ISC and Nominum.