We're moving this doc through the AD-sponsored informational track.
Though it's not a working group item, we'd like to solicit feedback
(from both tsvwg and int-area). Please note that the purpose of this
document is only to describe a known problem, not a solution.
Abstract:
IPv4 fragmentation is not sufficiently robust for general use in
today's Internet. The 16-bit IP identification field is not large
enough to prevent frequent incorrectly assembled IP fragments, and
the TCP and UDP checksums are insufficient to prevent the resulting
corrupted datagrams from being delivered to higher protocol layers.
This note describes some easily reproduced experiments demonstrating
the problem, and discusses some of the operational implications of
these observations.
Currently available at:
http://www.ietf.org/internet-drafts/draft-heffner-frag-harmful-00.txt
Thanks,
-John
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