https://bugzilla.redhat.com/show_bug.cgi?id=1487790 raises this:

IllegalArgumentException: All keys must be specified for class org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.SubnetmapKey. Missing key is getId.

java.lang.IllegalArgumentException: All keys must be specified for class org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.subnetmaps.SubnetmapKey. Missing key is getId. Supplied key is SubnetmapKey []
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145)
(...)
at org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker.syncReadOptional(SingleTransactionDataBroker.java:70)
at org.opendaylight.genius.mdsalutil.MDSALUtil.read(MDSALUtil.java:564)
at org.opendaylight.netvirt.fibmanager.FibUtil.getSubnetMap(FibUtil.java:622)
at org.opendaylight.netvirt.fibmanager.FibUtil.isVxlanNetworkAndInternalRouterVpn(FibUtil.java:704)
at org.opendaylight.netvirt.fibmanager.FibUtil.enforceVxlanDatapathSemanticsforInternalRouterVpn(FibUtil.java:723)
at org.opendaylight.netvirt.fibmanager.VrfEntryListener.lambda$checkDeleteLocalFibEntry$8(VrfEntryListener.java:985)
at org.opendaylight.genius.datastoreutils.DataStoreJobCoordinator$MainTask.run(DataStoreJobCoordinator.java:285)[319:org.opendaylight.genius.mdsalutil-api:0.2.2.Carbon]
(...)