If we try to assign Vpp to a BD using vbd ui, change is propagated to vpp node (can be verified with 'vppctl show bridge-domain'). However if we try to cancel assignment, we get NPE and v3po is not notified:

2016-02-25 12:32:38,582 | ERROR | lt-dispatcher-16 | DataTreeChangeListenerActor | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.3.0.SNAPSHOT | Error notifying listener org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter@39f61808
java.lang.NullPointerException
at io.fd.honeycomb.vbd.impl.BridgeDomain.modifyTerminationPoint(BridgeDomain.java:231)[271:io.fd.honeycomb.vbd.impl:1.0.0.SNAPSHOT]
at io.fd.honeycomb.vbd.impl.BridgeDomain.modifyNode(BridgeDomain.java:209)[271:io.fd.honeycomb.vbd.impl:1.0.0.SNAPSHOT]
at io.fd.honeycomb.vbd.impl.BridgeDomain.onDataTreeChanged(BridgeDomain.java:172)[271:io.fd.honeycomb.vbd.impl:1.0.0.SNAPSHOT]

Detailed log is attached.