If I were presenting this I wouldn't try to demo it because of the complexity of trying it. Murphy's Law clearly states that it will work flawlessly until you are in the middle of the presentation to the board and then..... I would prefer to give a laymans explanation of the issue, why the firewall may fail to detect it and what the host will do with the remaining packets.
Damn, aint that the truth! lol!

Thank you for the input, Definately something to think about.