The following exception was thrown by IPv6 service module during IPv6 service bind and unbind operations. This needs to be avoided during multiple IPv6 service interface binding and unbinding operations.

2018-08-13T08:09:10,338 | ERROR | org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port_AsyncClusteredDataTreeChangeListenerBase-DataTreeChangeHandler-0 | AsyncClusteredDataTreeChangeListenerBase | 272 - org.opendaylight.genius.mdsalutil-api - 0.4.3.SNAPSHOT | Thread terminated due to uncaught exception: org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port_AsyncClusteredDataTreeChangeListenerBase-DataTreeChangeHandler-0
java.lang.RuntimeException: OptimisticLockFailedException{message=Optimistic lock failed for path /(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-bindings/services-info/services-info[

]/bound-services/bound-services[\{(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-priority=7}], errorList=[RpcError [message=Optimistic lock failed for path /(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-bindings/services-info/services-info[\{(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)interface-name=61dcb67d-a8d5-4d43-9d5b-63f202b2a090, (urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-mode=(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-mode-ingress}]/bound-services/bound-services[\{(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-priority=7}], severity=ERROR, errorType=APPLICATION, tag=resource-denied, applicationTag=null, info=null, cause=org.opendaylight.yangtools.yang.data.api.schema.tree.ConflictingModificationAppliedException: Node was replaced by other transaction.]]}
at org.opendaylight.genius.mdsalutil.MDSALUtil.syncWrite(MDSALUtil.java:584) [272:org.opendaylight.genius.mdsalutil-api:0.4.3.SNAPSHOT]
at org.opendaylight.netvirt.ipv6service.utils.Ipv6ServiceUtils.bindIpv6Service(Ipv6ServiceUtils.java:470) [367:org.opendaylight.netvirt.ipv6service-impl:0.6.3.SNAPSHOT]
at org.opendaylight.netvirt.ipv6service.IfMgr.addHostIntf(IfMgr.java:368) [367:org.opendaylight.netvirt.ipv6service-impl:0.6.3.SNAPSHOT]
at org.opendaylight.netvirt.ipv6service.NeutronPortChangeListener.addInterfaceInfo(NeutronPortChangeListener.java:130) [367:org.opendaylight.netvirt.ipv6service-impl:0.6.3.SNAPSHOT]
at org.opendaylight.netvirt.ipv6service.NeutronPortChangeListener.add(NeutronPortChangeListener.java:68) [367:org.opendaylight.netvirt.ipv6service-impl:0.6.3.SNAPSHOT]
at org.opendaylight.netvirt.ipv6service.NeutronPortChangeListener.add(NeutronPortChangeListener.java:30) [367:org.opendaylight.netvirt.ipv6service-impl:0.6.3.SNAPSHOT]
at org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase$DataTreeChangeHandler.run(AsyncClusteredDataTreeChangeListenerBase.java:161) [272:org.opendaylight.genius.mdsalutil-api:0.4.3.SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:?]
at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: org.opendaylight.controller.md.sal.common.api.data.OptimisticLockFailedException: Optimistic lock failed for path /(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-bindings/services-info/services-info[\{(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)interface-name=61dcb67d-a8d5-4d43-9d5b-63f202b2a090, (urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-mode=(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-mode-ingress}]/bound-services/bound-services[\{(urn:opendaylight:genius:interfacemanager:servicebinding?revision=2016-04-06)service-priority=7}]