fix(radius): prevent devices from using sqlippool during accounting

files/sites-available/default

@@ -648,13 +648,24 @@ accounting {
 	#  Ensure that &control:Pool-Name is set to determine which pool of IPs are used.
 	# sqlippool
 
-    ### rebuild Pool-Name 
+    #
+    # Determine the client type.
+    # Devices use a fixed IP from radreply.
+    # Engineers use an IP from sqlippool/radippool.
+    #
+    update control {
+        Tmp-String-1 := "%{sql:SELECT client_type FROM node_assignments WHERE username='%{User-Name}'}"
+    }
+
+    #
+    # Return the IP to the pool only for engineers.
+    #
+    if (&control:Tmp-String-1 == "engineer") {
+
         update control {
             Pool-Name := "engineers-%{sql:SELECT split_part('%{User-Name}', '@', 2)}"
         }
 
-    ### apply only for engineers
-    if (&control:Pool-Name =~ /^engineers-/) {
         sqlippool
     }
 	#  Log traffic to an SQL database.