Decreasing Fetch time of Root Data by Additional Caching Rules

Document Type Expired Internet-Draft (individual)
Authors Arnt Gulbrandsen  , Jiankang Yao 
Last updated 2019-08-17 (latest revision 2019-02-13)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Some DNS recursive resolvers have long round trip times to the nearest DSN root server, which has been an obstacle to DNS query performance. In order to decrease root record fetch time without introducing a new source of errors, this document proposes a root- specific modification to the caching rules.


Arnt Gulbrandsen (
Jiankang Yao (

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