IP Fragmentation - Not reliable over the Internet?

[dot at dotat.at (Tony Finch)]

Christopher Palmer <Christopher.Palmer at microsoft.com> wrote:
>
> What is the probability that a random path between two Internet hosts
> will traverse a middlebox that drops or otherwise barfs on fragmented
> IPv4 packets?

This question is important for large EDNS packets so you'll find some
recent practical investigations from the perspective of people interested
in DNSSEC. For instance, a couple of presentations from Roland van
Rijswijk:

https://ripe64.ripe.net/presentations/91-20120418_-_RIPE64_-_Ljubljana_-_DNSSEC_-_UDP_issues.pdf
http://toronto45.icann.org/meetings/toronto2012/presentation-dnssec-fragmentation-17oct12-en.pdf

Tony.
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