new draft
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Mark Andrews
@@ -1,8 +1,6 @@
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INTERNET-DRAFT Andreas Gustafsson
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draft-ietf-dnsext-unknown-rrs-02.txt ISC
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November 2001
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draft-ietf-dnsext-unknown-rrs-03.txt Nominum Inc.
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June 2002
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Handling of Unknown DNS RR Types
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@@ -51,9 +49,9 @@ Abstract
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Expires May 2002 [Page 1]
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Expires December 2002 [Page 1]
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draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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fully realized. This memo proposes changes to name servers and to
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@@ -107,9 +105,9 @@ draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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Expires May 2002 [Page 2]
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Expires December 2002 [Page 2]
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draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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in RFC2782 prohibits compression, RFC2052 mandated it, and some
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@@ -158,16 +156,22 @@ draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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An implementation MAY also choose to represent some RRs of known type
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using the above generic representations for the type, class and/or
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RDATA, which carries the benefit of making the resulting master file
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portable to servers where these types are unknown.
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portable to servers where these types are unknown. Using the generic
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representation for the RDATA of an RR of known type can also be
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Expires May 2002 [Page 3]
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Expires December 2002 [Page 3]
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draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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useful in the case of an RR type where the text format varies
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depending on a version, protocol, or similar field (or several)
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embedded in the RDATA when such a field has a value for which no text
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format is known, e.g., a LOC RR [RFC1876] with a VERSION other than
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0.
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Even though an RR of known type represented in the \# format is
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effectively treated as an unknown type for the purpose of parsing the
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RDATA text representation, all further processing by the server MUST
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@@ -210,6 +214,14 @@ draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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To ensure backwards compatibility, this canonical form remains
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unchanged for any RR types defined in RFC2931 or earlier. That is,
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Expires December 2002 [Page 4]
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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the domain names embedded in RRs of type NS, MD, MF, CNAME, SOA, MB,
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MG, MR, PTR, HINFO, MINFO, MX, HINFO, RP, AFSDB, RT, SIG, PX, NXT,
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NAPTR, KX, SRV, DNAME, and A6 are converted to lower case. For all
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@@ -217,13 +229,6 @@ draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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downcasing of embedded domain names takes place. The owner name is
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still set to lower case.
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Expires May 2002 [Page 4]
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draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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The canonical ordering is as specified in RFC2535 section 8.3, where
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the octet sequence is the canonical form as revised by this
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specification.
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@@ -258,9 +263,21 @@ References
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[RFC1123] - Requirements for Internet Hosts -- Application and
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Support, R. Braden, Editor, October 1989.
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[RFC1876] - A Means for Expressing Location Information in the Domain
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Name System, C. Davis, P. Vixie, T. Goodwin, I. Dickinson, January
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1996.
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[RFC2052] - A DNS RR for specifying the location of services (DNS
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SRV), A. Gulbrandsen, P. Vixie, October 1996. Obsoleted by RFC2782.
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Expires December 2002 [Page 5]
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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[RFC2119] - Bradner, S., "Key words for use in RFCs to Indicate
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Requirement Levels", BCP 14, RFC 2119, March 1997.
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@@ -273,32 +290,25 @@ References
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[RFC2782] - A DNS RR for specifying the location of services (DNS
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SRV). A. Gulbrandsen, P. Vixie, L. Esibov, February 2000.
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Expires May 2002 [Page 5]
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draft-ietf-dnsext-unknown-rrs-02.txt November 2001
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[RFC2929] - Domain Name System (DNS) IANA Considerations. D.
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Eastlake, E. Brunner-Williams, B. Manning, September 2000.
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Author's Address
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Andreas Gustafsson
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ISC
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950 Charter Street
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Nominum Inc.
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2385 Bay Rd
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Redwood City, CA 94063
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USA
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Phone: +1 650 779 7004
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Phone: +1 650 381 6004
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Email: Andreas_Gustafsson@isc.org
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Email: gson@nominum.com
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Full Copyright Statement
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Copyright (C) The Internet Society (2001). All Rights Reserved.
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Copyright (C) The Internet Society (2001 - 2002). All Rights Reserved.
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This document and translations of it may be copied and furnished to
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others, and derivative works that comment on or otherwise explain it
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@@ -317,6 +327,13 @@ Full Copyright Statement
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The limited permissions granted above are perpetual and will not be
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revoked by the Internet Society or its successors or assigns.
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Expires December 2002 [Page 6]
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draft-ietf-dnsext-unknown-rrs-03.txt June 2002
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This document and the information contained herein is provided on an
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"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
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TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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@@ -331,5 +348,43 @@ Full Copyright Statement
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Expires May 2002 [Page 6]
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Expires December 2002 [Page 7]
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