IPv6 Router Advertisement Options for DNS Configuration
draft-ietf-6man-rdnss-rfc6106bis-15

The information below is for an old version of the document
Document Type Active Internet-Draft (6man WG)
Last updated 2017-01-27 (latest revision 2017-01-17)
Replaces draft-jeong-6man-rdnss-rfc6106-bis
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Send notices to "Fernando Gont" <fgont@si6networks.com>, bob.hinden@gmail.com, otroan@employees.org
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IANA action state RFC-Ed-Ack
RFC Editor RFC Editor state EDIT
Network Working Group                                           J. Jeong
Internet-Draft                                   Sungkyunkwan University
Obsoletes: 6106 (if approved)                                    S. Park
Intended status: Standards Track                     Samsung Electronics
Expires: July 21, 2017                                        L. Beloeil
                                                      France Telecom R&D
                                                          S. Madanapalli
                                                       iRam Technologies
                                                        January 17, 2017

        IPv6 Router Advertisement Options for DNS Configuration
                  draft-ietf-6man-rdnss-rfc6106bis-15

Abstract

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

   This document, which obsoletes RFC 6106, defines a higher default
   value of the lifetime of the DNS RA options to reduce the likelihood
   of expiry of the options on links with a relatively high rate of
   packet loss.

Status of This Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Drafts.

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   This Internet-Draft will expire on July 21, 2017.

Jeong, et al.             Expires July 21, 2017                 [Page 1]
Internet-Draft             IPv6 DNS RA Options              January 2017

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

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  . . . . . . . . . . . . . . .  5
     5.2.  DNS Search List Option . . . . . . . . . . . . . . . . . .  7
     5.3.  Procedure of DNS Configuration . . . . . . . . . . . . . .  8
       5.3.1.  Procedure in IPv6 Hosts  . . . . . . . . . . . . . . .  8
       5.3.2.  Warnings for DNS Options Configuration . . . . . . . .  9
   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  . . . . . . . . . . . . . . . . . . . 12
     7.1.  Security Threats . . . . . . . . . . . . . . . . . . . . . 12
     7.2.  Recommendations  . . . . . . . . . . . . . . . . . . . . . 12
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 13
   9.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     10.1. Normative References . . . . . . . . . . . . . . . . . . . 14
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