2016-09-06 11:33:45,113 | INFO | on-dispatcher-45 | InterfaceStateChangeListener | 596 - org.opendaylight.vpnservice.vpnmanager-impl - 0.2.2.Beryllium-SR2 | Received port DOWN event for interface ab41232f-e0ad-4d65-9552-b7a5e02fa314
2016-09-06 11:33:45,113 | INFO | on-dispatcher-45 | InterfaceStateChangeListener | 596 - org.opendaylight.vpnservice.vpnmanager-impl - 0.2.2.Beryllium-SR2 | Received port DOWN event for interface tapab41232f-e0
2016-09-06 11:33:45,113 | ERROR | on-dispatcher-36 | DataChangeListener | 155 - org.opendaylight.controller.sal-distributed-datastore - 1.3.2.Beryllium-SR2 | Error notifying listener org.opendaylight.vpnservice.elan.internal.ElanInterfaceStateChangeListener
java.lang.NullPointerException
at org.opendaylight.vpnservice.elan.internal.ElanInterfaceManager.removeElanInterface(ElanInterfaceManager.java:189)[604:org.opendaylight.vpnservice.elanmanager-impl:0.2.2.Beryllium-SR2]
at org.opendaylight.vpnservice.elan.internal.ElanInterfaceManager.removeElanService(ElanInterfaceManager.java:153)[604:org.opendaylight.vpnservice.elanmanager-impl:0.2.2.Beryllium-SR2]
at org.opendaylight.vpnservice.elan.internal.ElanInterfaceStateChangeListener.remove(ElanInterfaceStateChangeListener.java:103)[604:org.opendaylight.vpnservice.elanmanager-impl:0.2.2.Beryllium-SR2]
at org.opendaylight.vpnservice.elan.internal.ElanInterfaceStateChangeListener.remove(ElanInterfaceStateChangeListener.java:38)[604:org.opendaylight.vpnservice.elanmanager-impl:0.2.2.Beryllium-SR2]
at org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener.removeData(AbstractDataChangeListener.java:100)[579:org.opendaylight.vpnservice.mdsalutil-api:0.2.2.Beryllium-SR2]
at org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener.onDataChanged(AbstractDataChangeListener.java:56)[579:org.opendaylight.vpnservice.mdsalutil-api:0.2.2.Beryllium-SR2]
at org.opendaylight.controller.md.sal.binding.impl.AbstractForwardedDataBroker$TranslatingDataChangeInvoker.onDataChanged(AbstractForwardedDataBroker.java:143)[130:org.opendaylight.controller.sal-binding-broker-impl:1.3.2.Beryllium-SR2]
at org.opendaylight.controller.cluster.datastore.DataChangeListener.dataChanged(DataChangeListener.java:66)[155:org.opendaylight.controller.sal-distributed-datastore:1.3.2.Beryllium-SR2]
at org.opendaylight.controller.cluster.datastore.DataChangeListener.handleReceive(DataChangeListener.java:39)[155:org.opendaylight.controller.sal-distributed-datastore:1.3.2.Beryllium-SR2]
at org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor.onReceive(AbstractUntypedActor.java:34)[151:org.opendaylight.controller.sal-clustering-commons:1.3.2.Beryllium-SR2]
at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)[140:com.typesafe.akka.actor:2.3.14]
at akka.actor.Actor$class.aroundReceive(Actor.scala:467)[140:com.typesafe.akka.actor:2.3.14]
at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)[140:com.typesafe.akka.actor:2.3.14]
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)[140:com.typesafe.akka.actor:2.3.14]
at akka.actor.ActorCell.invoke(ActorCell.scala:487)[140:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)[140:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.Mailbox.run(Mailbox.scala:220)[140:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)[140:com.typesafe.akka.actor:2.3.14]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)[137:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)[137:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)[137:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)[137:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]