If a standard LLDP comes from a different network, we should drop it. The...

If a standard LLDP comes from a different network, we should drop it.  The standard LLDP mac address could be :00, :03, :0e.

src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java

@@ -146,6 +146,12 @@ public class LinkDiscoveryManager
     protected SingletonTask sendLLDPTask;
     private static final byte[] LLDP_STANDARD_DST_MAC_STRING = 
     		HexString.fromHexString("01:80:c2:00:00:0e");
+    private static final byte[] LLDP_STANDARD_DST_MAC_STRING_00 =
+            HexString.fromHexString("01:80:c2:00:00:00");
+    private static final byte[] LLDP_STANDARD_DST_MAC_STRING_03 =
+            HexString.fromHexString("01:80:c2:00:00:03");
+    private static final byte[] LLDP_STANDARD_DST_MAC_STRING_0E =
+            HexString.fromHexString("01:80:c2:00:00:0e");
     // BigSwitch OUI is 5C:16:C7, so 5D:16:C7 is the multicast version
     // private static final String LLDP_BSN_DST_MAC_STRING = "5d:16:c7:00:00:01";
     private static final String LLDP_BSN_DST_MAC_STRING = "ff:ff:ff:ff:ff:ff";
@@ -550,13 +556,18 @@ public class LinkDiscoveryManager
             return handleLldp((LLDP) eth.getPayload(), sw, pi, false, cntx);
         } else if (eth.getEtherType() == Ethernet.TYPE_LLDP)  {
             return handleLldp((LLDP) eth.getPayload(), sw, pi, true, cntx);
-        } else if (eth.getEtherType() < 1500 &&
-        		   Arrays.equals(eth.getDestinationMACAddress(),
-        				   	     LLDP_STANDARD_DST_MAC_STRING)) {
-        	// drop any other link discovery/spanning tree protocols
-        	return Command.STOP;
+        } else if (eth.getEtherType() < 1500) {
+            if (Arrays.equals(eth.getDestinationMACAddress(),
+                              LLDP_STANDARD_DST_MAC_STRING_00) ||
+                Arrays.equals(eth.getDestinationMACAddress(),
+                              LLDP_STANDARD_DST_MAC_STRING_03) ||
+                Arrays.equals(eth.getDestinationMACAddress(),
+                              LLDP_STANDARD_DST_MAC_STRING_0E)) {
+                // drop any other link discovery/spanning tree protocols
+                return Command.STOP;
+            }
         }
-        
+
         return Command.CONTINUE;
     }