Yes this can be done. I recommend that you use the Arduino Ethernet Sheild (wiznet chip) or the adafruit one with the wiznet chip. Go to the wiznet web site and look at their sample code. They have samples that will let you get to layer 2 and bypass layer 3. I have a large project that will be doing extensive use of layer 2 (i.e. implementing a protocol that is not TCP or UDP). I have looked at the sample code enough to know that it can be done. What I am going to build will have what you are looking to do as one of the many options.
Let me know how you make out and we can help each other.
If you cant find the sample code on the wiznet site, let me know and I will go find the link again.
Mark