[SIGAR-110] change to ping TCP || UDP
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				@ -50,7 +50,10 @@ public class NfsFileSystem extends FileSystem implements java.io.Serializable {
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    }
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    public boolean ping() {
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        return RPC.ping(getHostname(), NFS_PROGRAM) == 0;
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        String hostname = getHostname();
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        return
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            (RPC.ping(hostname, RPC.TCP, NFS_PROGRAM, 2) == 0) ||
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            (RPC.ping(hostname, RPC.UDP, NFS_PROGRAM, 2) == 0);
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    }
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    public String getUnreachableMessage() {
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