IC2 Exp and IC2 Classic have differend Networking classes. Or at least semi differences.
Now i partly added stuff that supports the basic functions that addons uses so that they do not crash when the first packet request get called. That do not mean that everything works on beginning but the compatiblity to most addons that only uses networking parts (more then the API) and some other stuff will have no longer crash problems with IC2 Classic.

That thing here is a work in progress thing it requires a lot of testing the basic game runs with it everything else goes further then i can test...

Yeah it is stable