nostr:npub1kpwlxpzkxfmuxjmzc2wp3rf9vjg0sgydmlhsnrgqr3maf59h86qqdxxzz4 I don't have a lot of personal time to do proper stewardship over my cross platform AX.25 implementation but it was my attempt to make it trivial to do packet radio in macOS and the BSDs, and implements the full 2.2 standard and with little porting effort can be a good stand in for the ailing Linux kernel implementation.

https://scm.xan.host/patty.git