You can get the RFC here: [http://hinezumi.org/viewcvs/netsukuku/doc/main_doc/ntk_rfc/Ntk_p2p_over_ntk.pdf?view=co Ntk_p2p_over_ntk.pdf] or from here: [http://netsukuku.freaknet.org/index.php?pag=documentation&dir=main_documentation/ntk_rfc NTK RFCs]
The source is here: [http://hinezumi.org/viewcvs/netsukuku/proto/doc/rfc/Ntk_p2p_over_ntk/ cvs]