Are you getting the following error when trying to use a Coherence Extend client?
java.lang.IllegalStateException : SafeCluster has been explicitly stopped or has not been started
You may want to disable the packet publisher on the client (override is tangosol.coherence.tcmp.enabled). To be extra sure, you could even set client’s TTL is set to 0 (which will prevent it from finding clusters on other computers), and if you run the cache server locally you may even want to give it a clusterport that no cluster members use. Why? Because even though Extend clients are supposed to communicate over TCP, in my experience they will try to discover clusters via multicast and, if found, attempt to join them via the usual UDP connection. Particularly when they are run on the same machine as the server.
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