@g0dub I was reading your page about data networking on your website and I think the project I'm working on, HamBSD, might be of interest to you.
I'm implementing an AX.25 stack that will support TCP/IP encapsulation, using a KISS TNC. A HamBSD machine can act as a router between microwave, Ethernet, 4G/LTE and HF/VHF/UHF links.
If you succeed with the £10 TNC, let me know and I'd be happy to check that my code is compatible.
I'm Iain, from Scotland.
I also have packaged a lot of radio-related software in Debian: https://qa.debian.org/developer.php?login=irl
I'm working on secure, robust and resilient amateur packet radio.
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