Symptom:
After configuring XNC to be a member of a cluster, the following errors are seen in xnc.log:

2014-03-28 13:38:22.718 EDT [Start Level Event Dispatcher] ERROR o.o.c.c.s.internal.ClusterManager - Host <10.10.10.9> is not known
2014-03-28 13:38:22.749 EDT [Start Level Event Dispatcher] ERROR o.o.c.c.s.internal.ClusterManager - Host <10.10.10.10> is not known
2014-03-28 13:38:22.750 EDT [Start Level Event Dispatcher] INFO  o.o.c.c.s.internal.ClusterManager - Starting the ClusterManager
2014-03-28 13:38:23.467 EDT [Start Level Event Dispatcher] ERROR o.i.r.t.jgroups.JGroupsTransport - ISPN000085: Error while trying to create a channel using config files: configuration/xncjgroups.xml
2014-03-28 13:38:23.468 EDT [Start Level Event Dispatcher] ERROR o.o.c.c.s.internal.ClusterManager - Cannot configure infinispan .. bailing out

Conditions:
- Cisco Extensible Network Controller (XNC)' version 1.0.0
- Cisco Extensible Network Controller (XNC)' version 1.5.0
- Clustering configured through the 'supernodes' parameter in config.ini