[rfc-dist] RFC 3755 on Legacy Resolver Compatibility for Delegation Signer (DS)

rfc-editor at rfc-editor.org rfc-editor at rfc-editor.org
Thu May 27 16:02:56 PDT 2004

A new Request for Comments is now available in online RFC libraries.

        RFC 3755

        Title:      Legacy Resolver Compatibility for Delegation
                    Signer (DS)
        Author(s):  S. Weiler
        Status:     Standards Track
        Date:       May 2004
        Mailbox:    weiler at tislabs.com
        Pages:      9
        Characters: 19812
        Updates:    3658, 2535

        I-D Tag:    draft-ietf-dnsext-dnssec-2535typecode-change-06.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3755.txt

As the DNS Security (DNSSEC) specifications have evolved, the
syntax and semantics of the DNSSEC resource records (RRs) have
changed.  Many deployed nameservers understand variants of these
semantics.  Dangerous interactions can occur when a resolver that
understands an earlier version of these semantics queries an
authoritative server that understands the new delegation signer
semantics, including at least one failure scenario that will cause
an unsecured zone to be unresolvable.  This document changes the
type codes and mnemonics of the DNSSEC RRs (SIG, KEY, and NXT) to
avoid those interactions.

This document a product of the DNS Extensions Working Group of the

This is now a Proposed Standard Protocol.

This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol.  Distribution
of this memo is unlimited.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute


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