Hi Experts, I have the below setup. [Agilent] ------------[Router]--------------------------------------------------- [ Free Radius Server] 50.0.0.2 50.0.0.1 172.52.1.1 eth0 eth1 eth0 The Router sends AAA Request to the Free Radius Server through the interface ( its ip 50.0.0.2) with Destination IP address as 172.52.1.1. But, when router receives response from the Radius server, the response has Source IP as as (50.0.0.1). When I looked into the radius-server, it has the below config. listen { ipaddr = * } it means, the radius can run on any IP address. My question here is, since the router sends request to Radius with the assumption of Radius server runs on (172.52.1.1.), the radius server should listen on that IP address. Is this correct ? Or can it run on any IP address. Since the radius replies with SRC_IP as 50.0.0.1, sessions are not coming up with the Router. Can some one clarify me asap. Appreciating your helps... Thanks, Kaliyaperumal K -- View this message in context: http://freeradius.1045715.n5.nabble.com/URGENT-Free-Radius-behavior-tp461928... Sent from the FreeRadius - Dev mailing list archive at Nabble.com.