ODL takes a long time to detect interface is down

Scenario:

1. Create an LSP
2. Subscribe to LSP change notifications using DataBrokerService.registerDataChangeListener(instanceId, listener) where instanceId:

InstanceIdentifier.builder(NetworkTopology.class)
.child(Topology.class, new TopologyKey(new TopologyId(topologyId)))
.child(Node.class, new NodeKey(new NodeId(nodeId)))
.augmentation(Node1.class)
.child(PathComputationClient.class)
.child(ReportedLsp.class, new ReportedLspKey(lspName));

3. Shut down one of the LSP hop interfaces to make it unroutable
4. Note when ODL sends event about LSP change.

On our setup ODL takes about 6 mins to detect interface is down.

Version:
org.opendaylight.controller.version = 0.1
org.opendaylight.controller.build.scm.version = 832327e85f47db63006e9bd6115ea85104124f4f
org.opendaylight.controller.build.user = jenkins-controller
org.opendaylight.controller.build.workspace = **********
org.opendaylight.controller.build.timestamp = 1398341431797
org.opendaylight.controller.build.machine = **********