Ipv6ServiceInterfaceEventListener: java.lang.NullPointerException

2016-08-29 08:13:28,722 | WARN | pool-48-thread-1 | AbstractIngressAclServiceImpl | 358 - org.opendaylight.netvirt.aclservice-impl - 0.4.0.SNAPSHOT | one of the ingress acl parameters can not be null. sg null, dpId 207558349382376
Exception in thread "pool-48-thread-1" 2016-08-29 08:13:28,723 | DEBUG | pool-48-thread-2 | pv6ServiceInterfaceEventListener | 359 - org.opendaylight.netvirt.ipv6service-impl - 0.4.0.SNAPSHOT | Port added KeyedInstanceIdentifier

{targetType=interface org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface, path=[org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState, org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface[key=InterfaceKey [_name=f478fd89-8cfc-41a2-8e2d-ee4874bdc86a]]]}

, Interface{getAdminStatus=Up, getIfIndex=1, getLowerLayerIf=[openflow:207558349382376:1], getName=f478fd89-8cfc-41a2-8e2d-ee4874bdc86a, getOperStatus=Up, getPhysAddress=PhysAddress [_value=f2:ae:5d:e8:c0:70], getType=class org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.iana._if.type.rev140508.L2vlan, augmentations={}}
java.lang.NullPointerException
at org.opendaylight.netvirt.aclservice.AbstractAclServiceImpl.syncRemoteAclRules(AbstractAclServiceImpl.java:140)
at org.opendaylight.netvirt.aclservice.AbstractAclServiceImpl.programAclWithAllowedAddress(AbstractAclServiceImpl.java:166)
at org.opendaylight.netvirt.aclservice.AbstractAclServiceImpl.applyAcl(AbstractAclServiceImpl.java:74)
at org.opendaylight.netvirt.aclservice.AclServiceManagerImpl.notify(AclServiceManagerImpl.java:54)
at org.opendaylight.netvirt.aclservice.listeners.AclInterfaceStateListener.add(AclInterfaceStateListener.java:97)
at org.opendaylight.netvirt.aclservice.listeners.AclInterfaceStateListener.add(AclInterfaceStateListener.java:32)
at org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase$DataTreeChangeHandler.run(AsyncDataTreeChangeListenerBase.java:124)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)