Release id tun23b833020ca from pool interfaces failed due to java.lang.RuntimeException: Specified Id key tun23b833020ca does not exist in id pool interfaces

Found in CSIT: https://logs.opendaylight.org/releng/jenkins092/netvirt-csit-1node-openstack-mitaka-upstream-transparent-boron/69/archives/odl1_karaf.log.gz

2016-12-14 14:42:39,244 | INFO | h for user karaf | command | 353 - org.apache.karaf.log.command - 3.0.7 | ROBOT MESSAGE: Starting test Delete ITM Tunnel
2016-12-14 14:42:39,297 | ERROR | nPool-1-worker-3 | IdManager | 303 - org.opendaylight.genius.idmanager-impl - 0.1.2.SNAPSHOT | Release id tun23b833020ca from pool interfaces failed due to java.lang.RuntimeException: Specified Id key tun23b833020ca does not exist in id pool interfaces
2016-12-14 14:42:39,298 | ERROR | nPool-1-worker-2 | IdManager | 303 - org.opendaylight.genius.idmanager-impl - 0.1.2.SNAPSHOT | Release id tunb69a709b364 from pool interfaces failed due to java.lang.RuntimeException: Specified Id key tunb69a709b364 does not exist in id pool interfaces
2016-12-14 14:42:39,298 | INFO | n-dispatcher-675 | ControllerUpdateCommand | 251 - org.opendaylight.ovsdb.southbound-impl - 1.3.2.SNAPSHOT | Register ODL controllers : {} bridges detail : {}
2016-12-14 14:42:39,301 | WARN | nPool-1-worker-2 | IfmUtil | 308 - org.opendaylight.genius.interfacemanager-impl - 0.1.2.SNAPSHOT | RPC Call to release Id tunb69a709b364 with Key [RpcError [message=Specified Id key tunb69a709b364 does not exist in id pool interfaces, severity=ERROR, errorType=APPLICATION, tag=operation-failed, applicationTag=null, info=null, cause=null]] returned with Errors {}