Hello, We have freeRADIUS proxies dedicated to eduroam, version 3.0.21. Some of our clients are sending us Access-Request ... with their realm. We forward them to their home_server (the same as the client) and they send them back to us again. This sometimes creates loops. How can we prevent our proxies from these loops ? Knowing that : - We don't have access to the clients/home server organizations RADIUS configs. - We tried a filter in the pre-proxy section : if (Realm && ("%{home_server:ipaddr}" == "%{client:ipaddr}")) { update request { &Module-Failure-Message += 'Rejected: loop prevent' } reject } But this rule is too strict for the monitoring requests used by some organizations. - Another way ? Regards, Arnaud Lauriou