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IPv6 Router Advertisement Options for DNS Configuration
RFC 6106

Document type: RFC - Proposed Standard (November 2010)
Obsoletes RFC 5006
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 6106 (Proposed Standard)
Responsible AD: Jari Arkko
Send notices to: 6man-chairs@tools.ietf.org, draft-ietf-6man-dns-options-bis@tools.ietf.org

Internet Engineering Task Force (IETF)                          J. Jeong
Request for Comments: 6106                                  Brocade/ETRI
Obsoletes: 5006                                                  S. Park
Category: Standards Track                            SAMSUNG Electronics
ISSN: 2070-1721                                               L. Beloeil
                                                      France Telecom R&D
                                                          S. Madanapalli
                                                       iRam Technologies
                                                           November 2010

        IPv6 Router Advertisement Options for DNS Configuration

Abstract

   This document specifies IPv6 Router Advertisement options to allow
   IPv6 routers to advertise a list of DNS recursive server addresses
   and a DNS Search List to IPv6 hosts.

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/rfc6106.

Copyright Notice

   Copyright (c) 2010 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.

Jeong, et al.                Standards Track                    [Page 1]
RFC 6106                   IPv6 RA DNS Options             November 2010

Table of Contents

   1. Introduction ....................................................3
      1.1. Applicability Statements ...................................3
      1.2. Coexistence of RA Options and DHCP Options for DNS
           Configuration ..............................................4
   2. Requirements Language ...........................................4
   3. Terminology .....................................................4
   4. Overview ........................................................5
   5. Neighbor Discovery Extension ....................................5
      5.1. Recursive DNS Server Option ................................6
      5.2. DNS Search List Option .....................................7
      5.3. Procedure of DNS Configuration .............................8
           5.3.1. Procedure in IPv6 Host ..............................8
           5.3.2. Warnings for DNS Options Configuration .............10
   6. Implementation Considerations ..................................10
      6.1. DNS Repository Management .................................10
      6.2. Synchronization between DNS Server List and
           Resolver Repository .......................................11
      6.3. Synchronization between DNS Search List and
           Resolver Repository .......................................12
   7. Security Considerations ........................................13
      7.1. Security Threats ..........................................13
      7.2. Recommendations ...........................................14
   8. IANA Considerations ............................................15
   9. Acknowledgements ...............................................15
   10. References ....................................................16
      10.1. Normative References .....................................16
      10.2. Informative References ...................................16
   Appendix A.  Changes from RFC 5006 ................................18

Jeong, et al.                Standards Track                    [Page 2]
RFC 6106                   IPv6 RA DNS Options             November 2010

1.  Introduction

   The purpose of this document is to standardize an IPv6 Router
   Advertisement (RA) option for DNS Recursive Server Addresses used for
   the DNS name resolution in IPv6 hosts.  This RA option was specified
   in an earlier Experimental specification [RFC5006].  This document is

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