IPv6 Host Configuration of DNS Server Information Approaches
RFC 4339
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Type |
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RFC - Informational
(February 2006; Errata)
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Author |
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Jaehoon Jeong
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Last updated |
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2013-03-02
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Stream |
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IETF
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plain text
html
pdf
htmlized
bibtex
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WG state
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(None)
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Document shepherd |
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No shepherd assigned
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IESG |
IESG state |
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RFC 4339 (Informational)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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David Kessens
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Send notices to |
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dmm@1-4-5.net, sra@hactrn.net
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Network Working Group J. Jeong, Ed.
Request for Comments: 4339 ETRI/University of Minnesota
Category: Informational February 2006
IPv6 Host Configuration of DNS Server Information Approaches
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2006).
IESG Note
This document describes three different approaches for the
configuration of DNS name resolution server information in IPv6
hosts.
There is not an IETF consensus on which approach is preferred. The
analysis in this document was developed by the proponents for each
approach and does not represent an IETF consensus.
The 'RA option' and 'Well-known anycast' approaches described in this
document are not standardized. Consequently the analysis for these
approaches might not be completely applicable to any specific
proposal that might be proposed in the future.
Abstract
This document describes three approaches for IPv6 recursive DNS
server address configuration. It details the operational attributes
of three solutions: RA option, DHCPv6 option, and well-known anycast
addresses for recursive DNS servers. Additionally, it suggests the
deployment scenarios in four kinds of networks (ISP, enterprise,
3GPP, and unmanaged networks) considering multi-solution resolution.
Jeong Informational [Page 1]
RFC 4339 IPv6 Host Configuration of DNS Server February 2006
Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................3
3. IPv6 DNS Configuration Approaches ...............................3
3.1. RA Option ..................................................3
3.1.1. Advantages ..........................................4
3.1.2. Disadvantages .......................................5
3.1.3. Observations ........................................5
3.2. DHCPv6 Option ..............................................6
3.2.1. Advantages ..........................................7
3.2.2. Disadvantages .......................................8
3.2.3. Observations ........................................9
3.3. Well-known Anycast Addresses ...............................9
3.3.1. Advantages .........................................10
3.3.2. Disadvantages ......................................10
3.3.3. Observations .......................................10
4. Interworking among IPv6 DNS Configuration Approaches ...........11
5. Deployment Scenarios ...........................................12
5.1. ISP Network ...............................................12
5.1.1. RA Option Approach .................................13
5.1.2. DHCPv6 Option Approach .............................13
5.1.3. Well-known Anycast Addresses Approach ..............14
5.2. Enterprise Network ........................................14
5.3. 3GPP Network ..............................................15
5.3.1. Currently Available Mechanisms and
Recommendations ....................................15
5.3.2. RA Extension .......................................16
5.3.3. Stateless DHCPv6 ...................................16
5.3.4. Well-known Addresses ...............................17
5.3.5. Recommendations ....................................18
5.4. Unmanaged Network .........................................18
5.4.1. Case A: Gateway Does Not Provide IPv6 at All .......18
5.4.2. Case B: A Dual-stack Gateway Connected to a
Dual-stack ISP .....................................19
5.4.3. Case C: A Dual-stack Gateway Connected to
an IPv4-only ISP ...................................19
5.4.4. Case D: A Gateway Connected to an IPv6-only ISP ....19
6. Security Considerations ........................................19
6.1. RA Option .................................................20
6.2. DHCPv6 Option .............................................21
6.3. Well-known Anycast Addresses ..............................21
7. Contributors ...................................................21
8. Acknowledgements ...............................................23
9. References .....................................................23
9.1. Normative References ......................................23
9.2. Informative References ....................................23
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