diff --git a/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java b/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
index 49e6812f496..f22a0db5fb6 100755
--- a/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
+++ b/core/src/com/cloud/agent/resource/virtualnetwork/VirtualRoutingResource.java
@@ -1091,6 +1091,7 @@ public class VirtualRoutingResource {
                 List<ConfigItem> cfg = generateCommandCfg(command);
                 if (cfg == null) {
                     s_logger.warn("Unknown commands for VirtualRoutingResource, but continue: " + cmd.toString());
+                    continue;
                 }
 
                 for (ConfigItem c : cfg) {