With master branch, by running tempest test of tempest.api.network.test_floating_ips.FloatingIPTestJSON.test_create_update_floatingip_with_port_multiple_ip_address results in null pointer exception as follows

2015-08-19 14:48:51,577 | ERROR | ntDispatcherImpl | OF13Provider | 401 - org.opendaylight.ovsdb.openstack.net-virt-providers - 1.2.0.SNAPSHOT | Exception in removing Local Rules for OvsdbTerminationPointAugmentation{getInterfaceExternalIds=[InterfaceExternalIds{getExternalIdKey=iface-id, getExternalIdValue=a2685974-b3c1-4bfd-9076-8c27d2c1f98d, augmentations={}}, InterfaceExternalIds{getExternalIdKey=iface-status, getExternalIdValue=active, augmentations={}}, InterfaceExternalIds{getExternalIdKey=attached-mac, getExternalIdValue=fa:16:3e:03:33:91, augmentations={}}], getInterfaceType=class org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeInternal, getInterfaceUuid=Uuid [_value=496aad83-2427-4c9d-9574-23e4335ee341], getName=tapa2685974-b3, getOfport=18, getPortUuid=Uuid [_value=76948ffa-5bc1-4485-ac74-77df6ca167da]} on Node{getNodeId=Uri [_value=ovsdb://uuid/8f75c49c-52b9-4303-8633-a80f0361429b/bridge/br-int], getTerminationPoint=[TerminationPoint{getTpId=Uri [_value=br-int], augmentations={interface org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation=OvsdbTerminationPointAugmentation

{getInterfaceType=class org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeInternal, getInterfaceUuid=Uuid [_value=c54dba88-6caa-40ae-bbf4-ee86ef607552], getName=br-int, getOfport=65534, getPortUuid=Uuid [_value=d59cb233-5256-40df-8a36-337cda6b024e]}

}}, TerminationPoint{getTpId=Uri [_value=patch-ext], augmentations={interface org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation=OvsdbTerminationPointAugmentation{getInterfaceType=class org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypePatch, getInterfaceUuid=Uuid [_value=15ee6779-d71f-4f0a-8b72-82488c98abc4], getName=patch-ext, getOfport=17, getOptions=[Options{getOption=peer, getValue=patch-int, augmentations={}}], getPortExternalIds=[PortExternalIds{getExternalIdKey=opendaylight-iid, getExternalIdValue=/network-topology:network-topology/network-topology:topology[network-topology:topology-id='ovsdb:1']/network-topology:node[network-topology:node-id='ovsdb://uuid/8f75c49c-52b9-4303-8633-a80f0361429b/bridge/br-int']/network-topology:termination-point[network-topology:tp-id='patch-ext'], augmentations={}}], getPortUuid=Uuid [_value=2e65773d-7394-480c-9986-4a1b8ba7326a]}}}, TerminationPoint{getTpId=Uri [_value=tap130b6250-d8], augmentations={interface org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation=OvsdbTerminationPointAugmentation{getInterfaceExternalIds=[InterfaceExternalIds{getExternalIdKey=iface-id, getExternalIdValue=130b6250-d8fd-4ed1-8cb1-bd1bf57b620d, augmentations={}}, InterfaceExternalIds{getExternalIdKey=iface-status, getExternalIdValue=active, augmentations={}}, InterfaceExternalIds{getExternalIdKey=attached-mac, getExternalIdValue=fa:16:3e:79:c9:61, augmentations={}}], getInterfaceType=class org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.InterfaceTypeInternal, getInterfaceUuid=Uuid [_value=f1a1d1ad-0c12-4336-b98b-1367e7b8a7e4], getName=tap130b6250-d8, getOfport=5, getPortUuid=Uuid [_value=c8609280-3aea-4863-98db-bb14ca4c928c]}}}, TerminationPoint{getTpId=Uri [_value=tapa2685974-b3], augmentations={interface org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation=OvsdbTerminationPointAugmentation{getInterfaceExternalIds=[InterfaceExternalIds{getExternalIdKey=iface-id, getExternalIdValue=a2685974-b3c1-4bfd-9076-8c27d2c1f98d, augmentations={}}, InterfaceExternalIds{getExternalIdKey=iface-status, getExternalIdValue=active, augmentations={}}, InterfaceExternalIds{getExternalIdKey=attached-mac, getExternalIdValue=fa:16:3e:03:33:91, augmentations={}}], getInterfaceType=class org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.Interfa
java.lang.NullPointerException
at org.opendaylight.ovsdb.openstack.netvirt.impl.SecurityServicesImpl.getDHCPServerPort(SecurityServicesImpl.java:121)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.OF13Provider.removeLocalRules(OF13Provider.java:845)[401:org.opendaylight.ovsdb.openstack.net-virt-providers:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.OF13Provider.handleInterfaceDelete(OF13Provider.java:1148)[401:org.opendaylight.ovsdb.openstack.net-virt-providers:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.SouthboundHandler.handleInterfaceDelete(SouthboundHandler.java:113)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.SouthboundHandler.processPortDelete(SouthboundHandler.java:166)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.SouthboundHandler.processPortEvent(SouthboundHandler.java:290)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.SouthboundHandler.processEvent(SouthboundHandler.java:233)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.impl.EventDispatcherImpl.dispatchEvent(EventDispatcherImpl.java:95)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.impl.EventDispatcherImpl.access$200(EventDispatcherImpl.java:28)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at org.opendaylight.ovsdb.openstack.netvirt.impl.EventDispatcherImpl$1.run(EventDispatcherImpl.java:57)[400:org.opendaylight.ovsdb.openstack.net-virt:1.2.0.SNAPSHOT]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_79]
at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_79]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_79]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_79]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_79]