Fix for address <-> children loops

app/Models/Address.php

@@ -116,6 +116,8 @@ class Address extends Model
 				case self::NODE_HC:
 					// Identify our children.
 					$children = self::select('addresses.*')
+						->where('zone_id',$this->zone_id)
+						->where('region_id',$this->region_id)
 						->where('hub_id',$this->id);
 
 					break;
@@ -136,6 +138,10 @@ class Address extends Model
 				->where('zone_id',$this->zone_id);
 		}
 
+		// I cant have myself as a child, and have a high role than me
+		$children->where('id','<>',$this->id)
+			->where('role','>',$this->role);
+
 		// Remove any children that we have session details for (SAME AS HC)
 		$sessions = self::select('hubnodes.*')
 			->join('system_zone',['system_zone.system_id'=>'addresses.system_id','system_zone.zone_id'=>'addresses.zone_id'])