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Isn't it impossible to know which node did dropped it and which did not?
Are you talking about your peers? It is possible.Or may be you are talking about any node?
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Lets say that there may be a 0.4 sec delay (max i guess) does that would matter?
Let us connect our first instance to nodes running bitcoin v0.8.x (use -connect option)The second instance should be connected to nodes on v0.9.x...
OK, I've gave you more than enough clues... Use your brain how to send two transactions...
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Even though English is not your native language you seem to be way better at it than me.
Oups... We look as two disabled persons here 