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ATR: Additional Truncation Response for Large DNS Response

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Linjian Song , Shengling Wang
Last updated 2019-09-09 (Latest revision 2019-03-08)
RFC stream Independent Submission
Intended RFC status Informational
Stream ISE state Response to Review Needed
Awaiting Reviews, Revised I-D Needed
Consensus boilerplate Unknown
Document shepherd Eliot Lear
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to Adrian Farrel <>

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


As the increasing use of DNSSEC and IPv6, there are more public evidence and concerns on IPv6 fragmentation issues due to larger DNS payloads over IPv6. This memo introduces an simple improvement on DNS server by replying an additional truncated response just after the normal fragmented response. It can be used to relieve users suffering on DNS latency and failures due to large DNS response. An ATR Experiment was done to show how well it works and some operational issues are discussed in this memo as well.


Linjian Song
Shengling Wang

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