Merge into master from pull request #146:

Change domain based hash to switch based hash (https://github.com/floodlight/floodlight/pull/146)

src/main/java/net/floodlightcontroller/routing/ForwardingBase.java

@@ -446,8 +446,7 @@ public abstract class ForwardingBase implements
             		IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
         
         Long broadcastHash;
-        broadcastHash = topology.getL2DomainId(sw.getId()) * prime
-        		+ eth.hashCode();
+        broadcastHash = sw.getId() * prime + eth.hashCode();
         if (broadcastCache.update(broadcastHash)) {
             sw.updateBroadcastCache(broadcastHash, pi.getInPort());
             return true;