Common Misbehavior against DNS Queries for IPv6 Addresses

Document Type Expired Internet-Draft (individual)
Last updated 2003-06-17
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


There is some known misbehavior of DNS authoritative servers when they are queried for AAAA resource records. Such behavior can block IPv4 communication which should actually be available, cause a significant delay in name resolution, or even make a denial of service attack. This memo describes details of the known cases and discusses the effect.


OrangeMorishita (
Tatsuya Jinmei (

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