A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Domain Name System Operations WG of the IETF.
Title : Fragmentation Avoidance in DNS
Authors : Kazunori Fujiwara
Paul Vixie
Filename : draft-ietf-dnsop-avoid-fragmentation-04.txt
Pages : 11
Date : 2021-02-22
Abstract:
EDNS0 enables a DNS server to send large responses using UDP and is
widely deployed. Path MTU discovery remains widely undeployed due to
security issues, and IP fragmentation has exposed weaknesses in
application protocols. Currently, DNS is known to be the largest
user of IP fragmentation. It is possible to avoid IP fragmentation
in DNS by limiting response size where possible, and signaling the
need to upgrade from UDP to TCP transport where necessary. This
document proposes to avoid IP fragmentation in DNS.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-dnsop-avoid-fragmentation/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-dnsop-avoid-fragmentation-04
https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-avoid-fragmentation-04
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-dnsop-avoid-fragmentation-04
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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