DHCPv4-over-DHCPv6 (DHCP 4o6) Transport
RFC 7341
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RFC - Proposed Standard
(August 2014; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-scskf-dhc-dhcpv4-over-dhcpv6
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Bernie Volz
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Shepherd write-up |
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Show
(last changed 2014-03-04)
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IESG state |
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RFC 7341 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Ted Lemon
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) Q. Sun
Request for Comments: 7341 Y. Cui
Category: Standards Track Tsinghua University
ISSN: 2070-1721 M. Siodelski
ISC
S. Krishnan
Ericsson
I. Farrer
Deutsche Telekom AG
August 2014
DHCPv4-over-DHCPv6 (DHCP 4o6) Transport
Abstract
IPv4 connectivity is still needed as networks migrate towards IPv6.
Users require IPv4 configuration even if the uplink to their service
provider supports IPv6 only. This document describes a mechanism for
obtaining IPv4 configuration information dynamically in IPv6 networks
by carrying DHCPv4 messages over DHCPv6 transport. Two new DHCPv6
messages and two new DHCPv6 options are defined for this purpose.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7341.
Sun, et al. Standards Track [Page 1]
RFC 7341 DHCPv4 over DHCPv6 August 2014
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
2. Requirements Language ...........................................3
3. Terminology .....................................................3
4. Applicability ...................................................4
5. Architecture Overview ...........................................4
6. New DHCPv6 Messages .............................................6
6.1. Message Types ..............................................6
6.2. Message Formats ............................................6
6.3. DHCPv4-query Message Flags .................................7
6.4. DHCPv4-response Message Flags ..............................7
7. New DHCPv6 Options ..............................................7
7.1. DHCPv4 Message Option Format ...............................7
7.2. DHCP 4o6 Server Address Option Format ......................8
8. Use of the DHCPv4-query Unicast Flag ............................9
9. DHCP 4o6 Client Behavior .......................................10
10. Relay Agent Behavior ..........................................12
11. DHCP 4o6 Server Behavior ......................................12
12. Security Considerations .......................................13
13. IANA Considerations ...........................................14
14. Contributors List .............................................14
15. References ....................................................14
15.1. Normative References .....................................14
15.2. Informative References ...................................15
Sun, et al. Standards Track [Page 2]
RFC 7341 DHCPv4 over DHCPv6 August 2014
1. Introduction
As the migration towards IPv6 continues, IPv6-only networks will
become more prevalent. In such networks, IPv4 connectivity will
continue to be provided as a service over IPv6-only networks. In
addition to provisioning IPv4 addresses for clients of this service,
other IPv4 configuration parameters may also be needed (e.g.,
addresses of IPv4-only services).
This document describes a transport mechanism to carry DHCPv4
messages using the DHCPv6 protocol for the dynamic provisioning of
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