Patrick, we are already far into the 21 century... try Linux ?
There are not any "packet drivers" in Windows.
But L2TP definitely works, though I don't know details.
You'd get more useful replies if you asked "how to use L2TP in Windows?". Or
FWIW, once long ago I wrote a packet driver for dos software runnng under
it was a normal NDIS protocol hooked to a tiny shim packet driver in the
The same approach could work for WinNT.