MSM765zl team Radius packets sourced from AP

Hi,

I have a team of 4 MSM765zl that are working fine. I have an SSID with 802.1x enabled and all the Radius access-request packets are sended by the controllers IP address to the Radius server. Is there any way to force to send the Radius access-request packets from the APs IP address and not from the controllers IP address?. I looked for it but I didn´t find the way to do it.

Best regards.