====== Verify Linux kernel ======
  * The AX.25 stack could have either been built into a monolithic kernel or installed as a kernel module
  * Check both of these methods to determine if your kernel is AX.25 ready

===== Monolithic kernel =====
<code bash>
grep -i "ax25*" /proc/kallsyms
</code>
  c03b3654 t bin_net_ax25_table
  c03b4154 t bin_net_ax25_param_table

===== Modules =====
<code bash>
 lsmod | grep -i "ax25"
</code>
  ax25                   46950  3 mkiss

===== How to Load the AX.25 Linux kernel module ======
  * Determine your kernel version
<code bash>
uname -r
</code>
  * As root run the following command replacing <kernel_version_number> with result of above command
<code bash>
insmod /lib/modules/<kernel_version_number>/kernel/net/ax25/ax25.ko
</code>
  * Add an ax25 entry to /etc/modules to load the ax25 module at boot time
<file>
ax25
</file>