Bigger Domain Name System UDP Replies

Document Type Expired Internet-Draft (dnsind WG)
Author Donald Eastlake 
Last updated 1998-06-26
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Domain Name System defaults to using UDP for queries and replies with a DNS payload limit of 512 bytes. Larger replies cause an initial truncation indication leading to a subsequent handling via TCP with substantially higher overhead. An extension to DNS UDP requests is specified which frequently permits larger UDP responses thus reducing the need for use of TCP.


Donald Eastlake (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)