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        RFC 2136:

        Title:      Dynamic Updates in the Domain Name System 
                    (DNS UPDATE)
        Author:     P. Vixie, Ed.,  S. Thomson, Y. Rekhter, J. Bound
        Date:       April 1997
        Mailbox:    paul@vix.com, set@thumper.bellcore.com, 
                    yakov@cisco.com, bound@zk3.dec.com, 
        Pages:      26
        Characters: 56354
        Updates/Obsoletes: 1035

        URL:        ftp://ds.internic.net/rfc/rfc2136.txt


The Domain Name System was originally designed to support queries of a
statically configured database.  While the data was expected to
change, the frequency of those changes was expected to be fairly low,
and all updates were made as external edits to a zone's Master File.
Using this specification of the UPDATE opcode, it is possible to add
or delete RRs or RRsets from a specified zone.  Prerequisites are
specified separately from update operations, and can specify a
dependency upon either the previous existence or nonexistence of an
RRset, or the existence of a single RR. This document is a product of
the DNS IXFR, Notification, and Dynamic Update Working Group of the
IETF.

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 Mary Kennedy
USC/Information Sciences Institute