Play more than one nation in MP

[chrispedersen]

I have observed:

One player CAN play two nations in a server game. No switching of keys are required.

Different machines (with different keys) can play the same nation. We know this, because subbing works.

One machine can play 13 nations, either server or hot seat
I know because I have done this to test strategies.

[thejeff]

I find it difficult to imagine that PBEM works differently than network in this situation. And Wraithlord just tested the 2 nations from the same machine & key in network, so it's OK there.

I've seen reports of CD key violations and it's become common wisdom that you can't play 2 nations, but I don't recall a report that actually stated they played both nations from the same machine and had a problem.
Using the server to set a nation AI can cause it, if you're playing your nation on a different machine.
I'm pretty sure it's been the same since Dom2.

llamabeast, would you be willing to set up a game to test this and figure out exactly what does happen?
Should be as simple as starting a game and having someone submit 2 turns from the same machine & key.
How is that different from the server's perspective than a hotseat game? Only that the server is different machine, right?