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Puzzler 1 is when a machine goes down and stays down, and you hang or retransmit until a timeout. Puzzler 2 is when a machine goes down and then comes back up, and you get reset.

Puzzler #1 is an unclean reboot with a server-side TCP reset after the server is back online.

Puzzler #2 is an unclean shutdown with a client-side TCP timeout since the server never responds.

Yeah. The other way around.

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