Simulate PPPoE for testing OpenWrt

Is it possible to simulate a PPPoE type connection to test the functionality of OpenWrt?
If so, what type of equipment or software is needed?

It seems possible to simply set up and run the real deal:


Thanks. I think that has given me what I needed to know.
Looks like there's an rp-pppoe-server package in OpenWrt repo as well.

Quick google shows a few people trying with not much success though...