Hi, I've been running a freeradius proxy with mpd in the same machine. My mpd is configured to use my localhost freeradius proxy/ And i have a central freeradius server where my freeradius proxy is consulting the users. Everything is working fine. So my env is: Server1: Server2 mpd ----------->>> freeradius server freeradius proxy I have a doubt how i could do if something has changed on my freeradius on server2 like a value in a table. I'd like my server1 check server2 some time and if something has changed send a COA packet to mpd to make the change. To let it more clear: I have in my server2 the attribute Mikrotik-Rate-Limit. If this attribute change for any reason my server1 should know. But unfortunately i don't have access to server2 to change any freeradius configuration. My server1 should check server2 and compare the last attribute with the new one. If it has changed send a CoA to mpd. I thought something like this in my post-auth section on my freeradius proxy on server1, but didn't work: update control { Tmp-String-0 = "%{request:Mikrotik-Rate-Limit}" Tmp-String-1 = "%{Mikrotik-Rate-Limit}" } if ("%{Tmp-String-0}" != "%{Tmp-String-1}") { update coa { User-Name = "%{User-Name}" Acct-Session-Id = "%{Acct-Session-Id}" NAS-IP-Address = "%{NAS-IP-Address}" Framed-IP-Address = "%{Framed-IP-Address}" Mikrotik-Rate-Limit += "%{request:Mikrotik-Rate-Limit}" } } Anyone could help me please? Thanks