OpenWrt/X-Wrt AX.25 Project
The OpenWrt/X-Wrt AX.25 Project allows any router supported by OpenWrt to use the amateur radio AX.25 protocol.
The core AX.25 tools and applications turn your router (along with a tnc and radio) into a tcp/ip capable packet system.
A version of digi_ned http://digined.pe1mew.nl/ turns your router into a smart digipeater while aprsd http://sourceforge.net/projects/aprsd/ gives it the ability to be an aprs Internet gateway (igate).
Comments, questions and discussion take place on the seatcp mailing list or I can be reached via XMPP/Jabber at JID: n7ipb at jabber.wetnet.net