I hope the day that non-Linux OS can talk with Linux through AX.25 packet radio protocol will come.

(hambsd? https://www.hambsd.org/)

Long time,

I pushed some codes to GitHub.

1) https://github.com/jg1uaa/sliptun
OpenBSD-5.7 has removed sl(4) SLIP interface, this tool provides simple SLIP communication. no CSLIP support.

2) https://github.com/jg1uaa/kisstun
based on sliptun tool, this provide TCP/IP on AX.25/KISS through tun(4) interface. testing now, no documents (sorry!)

3) https://github.com/jg1uaa/tunsifmode
tun(4) work as point-to-point mode as default, this tool enables broadcast mode.