Hi all Actually I have two servers (in cluster mode with heartbeat) working each one with two radius services, one proxy and one radius as follow: Server1: .- freeradius server 2.1.9 : listening on port 1645 , working in proxy mode with load balance configuration and point to local radius and Server2 radius - freeradius server 2.1.9: listening on port 1812, working in radius mode. Server2: .- freeradius server 2.1.9 : listening on port 1645 , working in proxy mode with load balance and point to local radius an Server1 radius - freeradius server 2.1.9: listening on port 1812, working in radius mode. Load Balance works fine but when I force shutdown of one of local radius servers the proxy crashes with a segmentation. you have any idea what is happening? Regards