Re: New Version Notification for draft-bonica-6man-frag-deprecate-00.txt

Randy Bush <randy@psg.com> Tue, 25 June 2013 19:42 UTC

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Date: Wed, 26 Jun 2013 04:42:12 +0900
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From: Randy Bush <randy@psg.com>
To: Ole Troan <otroan@employees.org>
Subject: Re: New Version Notification for draft-bonica-6man-frag-deprecate-00.txt
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>>> If it's a statement of fact, it shouldn't use RFC 2119 language. It
>>> should simply state the truth: "Network operators might filter IPv6
>>> fragments."
>> s/might/do/
> would you be able to answer why and where?

perceived, rightly or wrongly, as an attack vector.  they do similarly
for v4.  often at enterprise borders (hell, they filter 53/tcp), and
occasionally inter-isp.

in reality, you can not count on pmtud working, and don't bet your buns
on frags getting through.

randy