Somewhere for documents to live that have been recovered from the far flung edges of the internet.
The KISS TNC: A simple Host-to-TNC communications protocol
AX.25 Amateur Packet-Radio Link-Layer Protocol, v2.0, October 1984
AX.25 Link Access Protocol for Amateur Packet Radio v2.2, revision July 1998
AX.25 Link Access Protocol for Amateur Packet Radio v2.2, revision 10 September 2017
Internode Protocol (INP3) - Andreas Gal DB7KG
Multi-Drop KISS operation - Karl Medcalf WK5M Covers ACK MODE, POLL MODE, CHECKSUM MODE
"GlobalNet" - A Global Packet Routing System - while it never happened, this is useful prior art.
Old, mostly unused systems that might be interesting to pillage ideas from
NOSintro - TCP/IP over Packet Radio - An introduction to the KA9Q Network Operating System - Ian Wade G3NRW
Data Radio Standard Test Methods - Burton Lang VE2BMQ, Donald Rotolo N2IRZ
Proceedings of the UK Packet Conference (2002)
Proceedings of the UK Packet Conference (2003)
Proceedings of the UK Packet Conference (2004)
Proceedings of the 4th UK Amateur Packet Radio Conference (2005)