Thanks for the tip on disabling HAJNDI autodiscovery.

Ok, I ran my server through the debugger watching both the JGroups multicast 
socket creation and the DetatchedHANamingService.AutoDiscovery multicast socket 
creation.

The main difference is that in org.jgroups.protocols.UDP.createSockets(), 
mcast_recv_sock.setInterface(bind_addr) is passing in an real address on my 
machine.  In DetatchedHANamingService.AutoDiscovery.start(), 
socket.setInterface(bindAddress) is passing 0.0.0.0.  That call is throwing an 
exception thus logging the warning as seen above.

I noticed these comments in org.jgroups.protocols.UDP:

  |         // changed by bela Feb 12 2003: by default multicast sockets will 
be bound to all network interfaces
  | 
  |         // CHANGED *BACK* by bela March 13 2003: binding to all interfaces 
did not result in a correct
  |         // local_addr. As a matter of fact, comparison between e.g. 
0.0.0.0:1234 (on hostA) and
  |         // 0.0.0.0:1.2.3.4 (on hostB) would fail !
  | 

If I set a valid bind address for HAJNDI in cluster-service.xml, the warning 
disappears!

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