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DHCPv6-Shield: Protecting against Rogue DHCPv6 Servers (RFC7610) Disclosure Number: IPCOM000242820D
Original Publication Date: 2015-Aug-01
Included in the Prior Art Database: 2015-Aug-21
Document File: 24 page(s) / 26K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

F. Gont: AUTHOR [+3]


This document specifies DHCPv6-Shield, a mechanism for protecting hosts connected to a switched network against rogue DHCPv6 servers [RFC3315]. The basic concept behind DHCPv6-Shield is that a layer 2 device filters DHCPv6 messages intended for DHCPv6 clients (henceforth, "DHCPv6-server messages"), according to a number of different criteria. The most basic filtering criterion is that DHCPv6-server messages are discarded by the layer 2 device unless they are received on specific ports of the layer 2 device.

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Internet Engineering Task Force (IETF)                           F. Gont Request for Comments: 7610                        SI6 Networks / UTN-FRH BCP: 199                                                          W. Liu Category: Best Current Practice                      Huawei Technologies ISSN: 2070-1721                                          G. Van de Velde                                                           Alcatel-Lucent                                                              August 2015

          DHCPv6-Shield: Protecting against Rogue DHCPv6 Servers


   This document specifies a mechanism for protecting hosts connected to    a switched network against rogue DHCPv6 servers.  It is based on    DHCPv6 packet filtering at the layer 2 device at which the packets    are received.  A similar mechanism has been widely deployed in IPv4    networks ('DHCP snooping'); hence, it is desirable that similar    functionality be provided for IPv6 networks.  This document specifies    a Best Current Practice for the implementation of DHCPv6-Shield.

Status of This Memo

   This memo documents an Internet Best Current Practice.

   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    BCPs 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

Gont, et al.              Best Current Practice                 [Page 1]
 RFC 7610                      DHCPv6-Shield                  August 2015

 Copyright Notice

   Copyright (c) 2015 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    ( 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 ......................