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Code Editor : draft-ietf-dnsext-interop3597-02.txt

DNS Extensions Working Group                                 J. Schlyter
Internet-Draft                                              May 19, 2005
Expires: November 20, 2005

RFC 3597 Interoperability Report
                   draft-ietf-dnsext-interop3597-02.txt

Status of this Memo

By submitting this Internet-Draft, each author represents that any
    applicable patent or other IPR claims of which he or she is aware
    have been or will be disclosed, and any of which he or she becomes
    aware will be disclosed, in accordance with Section 6 of BCP 79.

Internet-Drafts are working documents of the Internet Engineering
    Task Force (IETF), its areas, and its working groups.  Note that
    other groups may also distribute working documents as Internet-
    Drafts.

Internet-Drafts are draft documents valid for a maximum of six months
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The list of current Internet-Drafts can be accessed at
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The list of Internet-Draft Shadow Directories can be accessed at
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This Internet-Draft will expire on November 20, 2005.

Abstract

This memo documents the result from the RFC 3597 (Handling of Unknown
    DNS Resource Record Types) interoperability testing.

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Table of Contents

1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
    2.  Implementations  . . . . . . . . . . . . . . . . . . . . . . .  3
    3.  Tests  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
      3.1   Authoritative Primary Name Server  . . . . . . . . . . . .  3
      3.2   Authoritative Secondary Name Server  . . . . . . . . . . .  3
      3.3   Full Recursive Resolver  . . . . . . . . . . . . . . . . .  4
      3.4   Stub Resolver  . . . . . . . . . . . . . . . . . . . . . .  4
      3.5   DNSSEC Signer  . . . . . . . . . . . . . . . . . . . . . .  4
    4.  Problems found . . . . . . . . . . . . . . . . . . . . . . . .  4
    5.  Summary  . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
    6.  Normative References . . . . . . . . . . . . . . . . . . . . .  4
        Author's Address . . . . . . . . . . . . . . . . . . . . . . .  4
    A.  Test zone data . . . . . . . . . . . . . . . . . . . . . . . .  5
        Intellectual Property and Copyright Statements . . . . . . . .  6

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1.  Introduction

This memo documents the result from the RFC 3597 (Handling of Unknown
    DNS Resource Record Types) interoperability testing.  The test was
    performed during June and July 2004 by request of the IETF DNS
    Extensions Working Group.

2.  Implementations

The following is a list, in alphabetic order, of implementations
    tested for compliance with RFC 3597:

DNSJava 1.6.4
       ISC BIND 8.4.5
       ISC BIND 9.3.0
       NSD 2.1.1
       Net::DNS 0.47 patchlevel 1
       Nominum ANS 2.2.1.0.d

These implementations covers the following functions (number of
    implementations tested for each function in paranthesis):

Authoritative Name Servers (4)
       Full Recursive Resolver (2)
       Stub Resolver (4)
       DNSSEC Zone Signers (2)

All listed implementations are genetically different.

3.  Tests

The following tests was been performed to validate compliance with
    RFC 3597 section 3 ("Transparency"), 4 ("Domain Name Compression")
    and 5 ("Text Representation").

3.1  Authoritative Primary Name Server

The test zone data (Appendix A) was loaded into the name server
    implementation and the server was queried for the loaded information.

3.2  Authoritative Secondary Name Server

The test zone data (Appendix A) was transferred using AXFR from
    another name server implementation and the server was queried for the
    transferred information.

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3.3  Full Recursive Resolver

A recursive resolver was queried for resource records from a domain
    with the test zone data (Appendix A).

3.4  Stub Resolver

A stub resolver was used to query resource records from a domain with
    the test zone data (Appendix A).

3.5  DNSSEC Signer

A DNSSEC signer was used to sign a zone with test zone data
    (Appendix A).

4.  Problems found

Two implementations had problems with text presentation of zero
    length RDATA.

One implementation had problems with text presentation of RR type
    code and classes >= 4096.

Bug reports were filed for problems found.

5.  Summary

Unknown type codes works in the tested authoritative servers,
    recursive resolvers and stub clients.

No changes are needed to advance RFC 3597 to draft standard.

6.  Normative References

[1]  Gustafsson, A., "Handling of Unknown DNS Resource Record (RR)
         Types", RFC 3597, September 2003.

Author's Address

Jakob Schlyter

Email: jakob@rfc.se

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Appendix A.  Test zone data

; A-record encoded as TYPE1
    a  TYPE1  \# 4 7f000001
    a  TYPE1  192.0.2.1
    a  A      \# 4 7f000002

; draft-ietf-secsh-dns-05.txt
    sshfp  TYPE44  \# 22 01 01 c691e90714a1629d167de8e5ee0021f12a7eaa1e

; bogus test record (from RFC 3597)
    type731    TYPE731    \# 6 abcd (
                               ef 01 23 45 )

; zero length RDATA (from RFC 3597)
    type62347  TYPE62347  \# 0

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Intellectual Property Statement

The IETF takes no position regarding the validity or scope of any
    Intellectual Property Rights or other rights that might be claimed to
    pertain to the implementation or use of the technology described in
    this document or the extent to which any license under such rights
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    made any independent effort to identify any such rights.  Information
    on the procedures with respect to rights in RFC documents can be
    found in BCP 78 and BCP 79.

Copies of IPR disclosures made to the IETF Secretariat and any
    assurances of licenses to be made available, or the result of an
    attempt made to obtain a general license or permission for the use of
    such proprietary rights by implementers or users of this
    specification can be obtained from the IETF on-line IPR repository at
    http://www.ietf.org/ipr.

The IETF invites any interested party to bring to its attention any
    copyrights, patents or patent applications, or other proprietary
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Disclaimer of Validity

This document and the information contained herein are provided on an
    "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
    OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
    ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
    INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
    INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
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Copyright (C) The Internet Society (2005).  This document is subject
    to the rights, licenses and restrictions contained in BCP 78, and
    except as set forth therein, the authors retain all their rights.

Acknowledgment

Funding for the RFC Editor function is currently provided by the
    Internet Society.

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Code Editor : draft-ietf-dnsext-interop3597-02.txt