Hi, Does anyone have any experience of load balancing two or more FreeRADIUS servers using the iptables CLUSTERIP target? For those unaware, it allows a single IP address to be assigned to multiple servers. A multicast MAC address is used so that the traffic is forwarded to each server, then iptables uses hashing to determine if the receiving server should handle the traffic. The hashing can be based on the source IP, the source IP and destination port, or the source IP and both source and destination ports. I have a pair of FreeRADIUS servers that are backed by a four node MySQL Cluster. The FreeRADIUS servers are used by our peers in a primary/secondary configuration, and the secondary only ever receives requests if the primary is unavailable. This results in the secondary server idling 99.99% of the time. I'm considering assigning a CLUSTERIP to the servers so we can make full use of the resources. Does anyone see any potential issues of using this with FreeRADIUS or know of any caveats I should be aware of? I have some production SMTP and FTP clusters that are load balanced in a similar way, with Pacemaker handling the failover, that have been running quite well for over a year. Thanks. REW