A patch to turn off BSN packets to see if spurious links issues goes away when there
are multiple links between controller domains.
diff --git a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
index df42075..6763c23 100644
--- a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
+++ b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java
@@ -606,6 +606,10 @@
         if (!isReverse && autoPortFastFeature && isFastPort(sw, port))
             return;
 
+        // FIXME ONOS does not support BSN packets 
+        if (!isStandard) {
+        	return;
+        }
         if (log.isTraceEnabled()) {
             log.trace("Sending LLDP packet out of swich: {}, port: {}",
                       sw, port);