Hi all, I'm using an LDAP-based authentication. I'd have a simple (typical filter) like this filter = uid=%{User-Name} Now, in addition, I'd need to authenticate based on a Service-Info attribute. So I need something like filter = "(&(uid=%{User-Name})(radiusServiceInfo=%{Service-Info})) The problem is that when Service-Info doesn't come in the Radius packet (because is not mandatory for me), it doesn't work, and I see on LDAP the following filter="(&(uid=test1)(?=undefined))" If Service-Info not present, I would expect something like filter="(&(uid=test1)(radiusSeviceInfo=))" Worse, in fact, what I need is a filter slightly different like filter = "(&(uid=%{User-Name})(!(radiusServiceInfo=%{Service-Info}))) In that case (using the !), the query sent is the following filter="(&(uid=test1)(?=error))" I've already search about that on the freeradius mailing-lists and I didn't saw any report about this problem. Is that any kind of bug? Or am I doing something wrong? I appreciate some help. Best Regards, Carlos Parada