AX25 ( AF_AX25 )Edit
AX.25 device names are `sl0', `sl1', etc. in 2.0.* kernels or `ax0', `ax1', etc. in 2.1.* kernels.
Kernel Compile Options:
Networking options ---> [*] Amateur Radio AX.25 Level 2
The AX25, Netrom and Rose protocols are covered by the AX25-HOWTO. These protocols are used by Amateur Radio Operators world wide in packet radio experimentation.
Most of the work for implementation of these protocols has been done by Jonathon Naylor, firstname.lastname@example.org.