Seems like this issue has been around for a some time:
https://groups.google.com/forum/#!topic/aprx-software/P2ua4iC_uOw
What application are you using that might be triggering it? I've never
seen it using the Linux's native AX.25 protocol stack and I'm using a
RHEL/Centos EPEL LT kernel (3.17.5)
$ uname -a
Linux
hampacket2.trinnet.net 3.17.5-1.ax25.el6.x86_64 #1 SMP Sun Dec 7
14:03:51 PST 2014 x86_64 x86_64 x86_64 GNU/Linux
--David
KI6ZHD