NullPointerException when bringing down a link between 2 devices

From ONOS3 log

2014-12-04 12:07:33,766 | WARN | event-dispatch-0 | AbstractListenerRegistry | 72 - org.onosproject.onos-api - 1.0.0.SNAPSHOT | Exception encountered while processing event DeviceEvent{time=2014-12-04T12:07:33.696, type=PORT_UPDATED, subject=DefaultDevice

{id=of:0000000000002800, type=SWITCH, manufacturer=Nicira, Inc., hwVersion=Open vSwitch, swVersion=2.3.0, serialNumber=None}

, port=DefaultPort{element=of:0000000000002800, number=2, isEnabled=false, type=COPPER, portSpeed=10}}
java.lang.NullPointerException
at org.onosproject.net.link.impl.LinkManager.removeLinks(LinkManager.java:276)[73:org.onosproject.onos-core-net:1.0.0.SNAPSHOT]
at org.onosproject.net.link.impl.LinkManager.access$400(LinkManager.java:62)[73:org.onosproject.onos-core-net:1.0.0.SNAPSHOT]
at org.onosproject.net.link.impl.LinkManager$InternalLinkProviderService.linksVanished(LinkManager.java:260)[73:org.onosproject.onos-core-net:1.0.0.SNAPSHOT]
at org.onosproject.provider.lldp.impl.LLDPLinkProvider$InternalLinkProvider.event(LLDPLinkProvider.java:215)[152:org.onosproject.onos-lldp-provider:1.0.0.SNAPSHOT]
at org.onosproject.provider.lldp.impl.LLDPLinkProvider$InternalLinkProvider.event(LLDPLinkProvider.java:167)[152:org.onosproject.onos-lldp-provider:1.0.0.SNAPSHOT]
at org.onosproject.event.AbstractListenerRegistry.process(AbstractListenerRegistry.java:63)[72:org.onosproject.onos-api:1.0.0.SNAPSHOT]
at org.onosproject.event.impl.CoreEventDispatcher$DispatchLoop.run(CoreEventDispatcher.java:95)[73:org.onosproject.onos-core-net:1.0.0.SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_25]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_25]