Simple/best tool to verify PMTUD?

Christopher J. Pilkington cjp at
Tue Dec 18 17:59:49 UTC 2012

I'm looking for a simple tool to verify PMTUD is usable along a
particular path. Ideally this tool would be cross-platform, or run on
Linux or Windows.

I've done some testing of my own by hand, but hoping a tool would help
the admin on the other side be able to test for themselves.

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