I have created a patch for FreeRadius 2.1.10 to support EAP-AKA.Please find the attached patch.
This file based on freeradius-1.1.4 version patch files.(http://freeradius.1045715.n5.nabble.com/EAP-AKA-support-for-Freeradius-1-1-4-td2794614.html)
And I found another patch file about "aka res length".
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I applyed this patch(version 2.1.10).
I compiled and even working.