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RFC 2136 Connected: An Internet Encyclopedia
RFC 2136

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RFC 2136

RFC 2136

Network Working Group
Request for Comments: 2136
Updates: 1035
Category: Standards Track

P. Vixie, Editor
ISC
S. Thomson
Bellcore
Y. Rekhter
Cisco
J. Bound
DEC
April 1997

Dynamic Updates in the Domain Name System (DNS UPDATE)

Status of this Memo

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.

Abstract

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.

UPDATE is atomic, i.e., all prerequisites must be satisfied or else no update operations will take place. There are no data dependent error conditions defined after the prerequisites have been met.

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Connected: An Internet Encyclopedia
RFC 2136

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