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    Root Cause Analysis

    1. java.net.UnknownHostException

      xubunty: unknown error

      at java.net.Inet4AddressImpl.lookupAllHostAddr()
    2. Java RT
      InetAddress.getLocalHost
      1. java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
      2. java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
      3. java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
      4. java.net.InetAddress.getLocalHost(InetAddress.java:1500)
      4 frames