A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the IPv6 Maintenance Working Group of the IETF.
Title : UDP Checksums for Tunneled Packets
Author(s) : Marshall Eubanks
P.F. Chimento
Filename : draft-ietf-6man-udpchecksums-01.txt
Pages : 12
Date : 2011-10-31
This document provides an update of RFC 2460[RFC2460] in order to
improve the performance of IPv6 in an increasingly important use
case, the use of tunneling to carry new transport protocols. The
performance improvement is obtained by relaxing the IPv6 UDP checksum
requirement for suitable tunneling protocol where header information
is protected on the "inner" packet being carried. This relaxation
removes the overhead associated with the computation of UDP checksums
on tunneled IPv6 packets and thereby improves the efficiency of the
traversal of firewalls and other network middleware by such new
protocols. We describe how the IPv6 UDP checksum requirement can be
relaxed in the situation where the encapsulated packet itself
contains a checksum, the limitations and risks of this approach, and
provides restrictions on the use of this relaxation to mitigate these
risks.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-6man-udpchecksums-01.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-6man-udpchecksums-01.txt
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