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java.lang.IllegalArgumentException: magic number is not valid at com.sun.enterprise.mgmt.transport.MessageImpl.parseHeader(MessageImpl.java:172) at com.sun.enterprise.mgmt.transport.BlockingIOMulticastSender$MessageProcessTask.run(BlockingIOMulticastSender.java:349) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662)