Thanks to all freeradius users!!!! I'm using freeradius v3.0.4 under Fedora 22. I try to proxy some Access-Request and add some check item/attribute before proxying. The radiusd -X output regarding this problem looks like this: "Wed Oct 21 18:31:19 2015 : Debug: (0) # Executing section pre-proxy from file /etc/raddb/sites-enabled/default Wed Oct 21 18:31:19 2015 : Debug: (0) pre-proxy { Wed Oct 21 18:31:19 2015 : Debug: (0) node.pre-proxy node.pre-proxy { Wed Oct 21 18:31:19 2015 : Debug: (0) if ("%{request:Packet-Type}" == 'Access-Request') Wed Oct 21 18:31:19 2015 : Debug: (0) EXPAND %{request:Packet-Type} Wed Oct 21 18:31:19 2015 : Debug: (0) --> Access-Request Wed Oct 21 18:31:19 2015 : Debug: (0) if ("%{request:Packet-Type}" == 'Access-Request') -> TRUE Wed Oct 21 18:31:19 2015 : Debug: (0) if ("%{request:Packet-Type}" == 'Access-Request') { Wed Oct 21 18:31:19 2015 : Debug: (0) update proxy-request { Wed Oct 21 18:31:19 2015 : Debug: (0) &NodeID == '0000000002' Wed Oct 21 18:31:19 2015 : Debug: (0) No existing attribute to filter, adding instead Wed Oct 21 18:31:19 2015 : Debug: (0) } # update proxy-request = noop Wed Oct 21 18:31:19 2015 : Debug: (0) } # if ("%{request:Packet-Type}" == 'Access-Request') = noop Wed Oct 21 18:31:19 2015 : Debug: (0) } # byon-node.pre-proxy byon-node.pre-proxy = noop Wed Oct 21 18:31:19 2015 : Debug: (0) } # pre-proxy = noop Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: Trying to allocate ID (0/2) Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: Failed allocating ID: Failed finding socket, caller must allocate a new one Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: Trying to open a new listener to the home server Wed Oct 21 18:31:19 2015 : Debug: Opening new proxy socket 'proxy address * port 0' Wed Oct 21 18:31:19 2015 : Debug: Listening on proxy address * port 45141 Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: Trying to allocate ID (1/2) Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: request is now in proxy hash Wed Oct 21 18:31:19 2015 : Debug: (0) proxy: allocating destination 192.168.42.193 port 1812 - Id 16 Wed Oct 21 18:31:19 2015 : Debug: (0) Proxying request to home server 192.168.42.193 port 1812 timeout 14.000000 Wed Oct 21 18:31:19 2015 : Debug: (0) Sending Access-Request packet to host 192.168.42.193 port 1812, id=16, length=0 Wed Oct 21 18:31:19 2015 : Debug: (0) User-Name = 'fname.lname@my-network.com' Wed Oct 21 18:31:19 2015 : Debug: (0) User-Password = 'passme' Wed Oct 21 18:31:19 2015 : Debug: (0) NAS-IP-Address = 127.0.0.1 Wed Oct 21 18:31:19 2015 : Debug: (0) NAS-Port = 100 Wed Oct 21 18:31:19 2015 : Debug: (0) Message-Authenticator = 0x29fc545638a7a1c6ec10b5f7e2c860c9 Wed Oct 21 18:31:19 2015 : Debug: (0) Event-Timestamp = 'Oct 21 2015 18:31:19 CEST' Wed Oct 21 18:31:19 2015 : Debug: (0) Realm = 'DEFAULT' Wed Oct 21 18:31:19 2015 : Debug: (0) Proxy-State = 0x3337 Wed Oct 21 18:31:19 2015 : Debug: (0) NodeID == '0000000002' Sending Access-Request Id 16 from 0.0.0.0:45141 to 192.168.42.193:1812 User-Name = 'fname.lname@my-network.com' User-Password = 'passme' NAS-IP-Address = 127.0.0.1 NAS-Port = 100 Message-Authenticator = 0x29fc545638a7a1c6ec10b5f7e2c860c9 Event-Timestamp = 'Oct 21 2015 18:31:19 CEST' Proxy-State = 0x3337" As you can see Realm and NodeID are not passed to the radius proxy in the access request. Can anyone suggest me something ? Sincerely yours. Tim - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html