I spend couple of hours yesterday playing with "Any transport over MPLS" and it works. It's easy to configure and easy to troubleshoot,anyway, I am not writing this post because it's easy to configure some MPLS application but because I tried it first on cisco 3725 and I hit some issues - so my advice is - if you are using dynamips and want to try some MPLS features just don't do it on 37xx platforms, use 72xx.
Sometimes you just need a good distraction, and I randomly got the urge to study for an exam; something I haven't done in years. I decided to look into network security and started watching some CompTIA training videos, and...it was all a bit too familiar. Apparently the search continues.