I usually don't answer questions like this, but I mentioned it to my housemate who's a network engineer and he was already familiar with GNS3 so...
Anyway, my answer is: you've asked a very niche-question, and I suspect you're unlikely to get a response to it on this small forum (though it's always possible). I suspect that they'll be like me and never heard of GNS3 (and I'm way, way too lazy to Google it). You may want to ask your question in a networking forum, or even one specific to GNS3 if possible.