diff --git a/server/src/com/cloud/network/topology/BasicNetworkTopology.java b/server/src/com/cloud/network/topology/BasicNetworkTopology.java
index 58bd760cfca..20aefd43e58 100644
--- a/server/src/com/cloud/network/topology/BasicNetworkTopology.java
+++ b/server/src/com/cloud/network/topology/BasicNetworkTopology.java
@@ -112,6 +112,7 @@ public class BasicNetworkTopology implements NetworkTopology {
             throw new ResourceUnavailableException("Unable to apply " + typeString, DataCenter.class, network.getDataCenterId());
         }
 
+        // should become a BasicNetworkVisitor in the end
         AdvancedNetworkVisitor visitor = new AdvancedNetworkVisitor();
 
         RuleApplier ruleApplier = ruleApplierWrapper.getRuleType();