With SOA-P 5.0 ER6 I'm seeing the following exception starting server on aix5:

12:03:27,571 ERROR [UDP] failed sending message to null (154 bytes)
java.lang.Exception: dest=/238.14.15.16:45688 (157 bytes)
at org.jgroups.protocols.UDP._send(UDP.java:361)
at org.jgroups.protocols.UDP.sendToAllMembers(UDP.java:302)
at org.jgroups.protocols.TP.doSend(TP.java:1474)
at org.jgroups.protocols.TP.send(TP.java:1464)
at org.jgroups.protocols.TP.down(TP.java:1185)
at org.jgroups.protocols.TP$ProtocolAdapter.down(TP.java:2304)
at org.jgroups.protocols.Discovery.down(Discovery.java:374)
at org.jgroups.protocols.MERGE2.down(MERGE2.java:175)
at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:360)
at org.jgroups.protocols.FD.down(FD.java:315)
at org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:95)
at org.jgroups.protocols.BARRIER.down(BARRIER.java:107)
at org.jgroups.protocols.pbcast.NAKACK.send(NAKACK.java:803)
at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:604)
at org.jgroups.protocols.UNICAST.down(UNICAST.java:455)
at org.jgroups.protocols.pbcast.STABLE$1.run(STABLE.java:644)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:452)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:314)
at java.util.concurrent.FutureTask.run(FutureTask.java:149)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:109)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:218)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:896)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:735)
Caused by:
java.io.IOException: The socket name is not available on this system.
at java.net.DatagramSocket.send(DatagramSocket.java:623)
at org.jgroups.protocols.UDP._send(UDP.java:352)
... 23 more