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RE: The IPv4 Internet MTU

Brian,

> A sender could always cache the most recently discovered PMTU
> to a given destination. That would be enough for repeated
> short UDP flows to the same destination. As for isolated
> short UDP flows, they just need to use the Internet minimum
> MTU (576 or 1280) - there's no other possible solution.

Minimum MTU for IPv4 is only 68 bytes; minimum EMTU_R
is the one that is 576 - right?

Thanks - Fred
fred.l.templin@boeing.com