We propose in this paper to use DHT networks to cope with test generation for very large and complex systems. Indeed, conformance testing is known to be impracticable for this kind of systems. After a brief description of our first distributed environment used to deal with test generation, we propose to use the localization scheme of resources on DHT networks in order to distribute the specification among all peers. Our new algorithms are explained and described, and finally, seem to be, to the best of our knowledge, the first practicable solution usable for test generation for very large systems without specification simplification.