title: Required ports 54321, 54322 are not available error on R in h2o
body: <p>I am unable to start H2o in MRO3.3
  the h2o.init() gave following output</p>
  
  <pre><code>08-02 00:40:36.543 127.0.0.1:54321       19672  main      INFO: ----- H2O started  -----
  08-02 00:40:36.610 127.0.0.1:54321       19672  main      INFO: Build git branch: rel-turan
  08-02 00:40:36.610 127.0.0.1:54321       19672  main      INFO: Build git hash: e2959c131831f8d5dad8c92eebdf0ad4a4e78d09
  08-02 00:40:36.610 127.0.0.1:54321       19672  main      INFO: Build git describe: jenkins-rel-turan-3
  08-02 00:40:36.610 127.0.0.1:54321       19672  main      INFO: Build project version: 3.8.1.3
  08-02 00:40:36.610 127.0.0.1:54321       19672  main      INFO: Built by: 'jenkins'
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Built on: '2016-03-06 14:54:19'
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Java availableProcessors: 4
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Java heap totalMemory: 150.0 MB
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Java heap maxMemory: 1.72 GB
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Java version: Java 1.8.0_91 (from Oracle Corporation)
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: JVM launch parameters: [-ea]
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: OS version: Linux 4.4.0-31-generic (amd64)
  08-02 00:40:36.611 127.0.0.1:54321       19672  main      INFO: Machine physical memory: 7.73 GB
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: X-h2o-cluster-id: 1470078635582
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: User name: 'chaithanya'
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Opted out of sending usage metrics.
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Possible IP Address: wlo1 (wlo1), fe80:0:0:0:d5a6:487d:f375:a2e%wlo1
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Possible IP Address: wlo1 (wlo1), 10.42.0.1
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Possible IP Address: enp8s0 (enp8s0), fe80:0:0:0:1c9a:f547:b84:a5da%enp8s0
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Possible IP Address: enp8s0 (enp8s0), 10.105.34.74
  08-02 00:40:36.612 127.0.0.1:54321       19672  main      INFO: Possible IP Address: lo (lo), 0:0:0:0:0:0:0:1%lo
  08-02 00:40:36.613 127.0.0.1:54321       19672  main      INFO: Possible IP Address: lo (lo), 127.0.0.1
  08-02 00:40:36.613 127.0.0.1:54321       19672  main      FATAL: On /127.0.0.1 some of the required ports 54321, 54322 are not available, change -port PORT and try again.
  </code></pre>
  
  <p>Output :</p>
  
  <pre><code>Exception in thread "main" java.lang.AssertionError
          at water.AutoBuffer.&lt;init&gt;(AutoBuffer.java:165)
          at water.UDPRebooted$T.send(UDPRebooted.java:25)
          at water.H2O.shutdown(H2O.java:519)
          at water.H2O.die(H2O.java:1770)
          at water.init.NetworkInit.initializeNetworkSockets(NetworkInit.java:410)
          at water.H2O.startLocalNode(H2O.java:1294)
          at water.H2O.main(H2O.java:1705)
          at water.H2OStarter.start(H2OStarter.java:21)
          at water.H2OStarter.start(H2OStarter.java:36)
          at water.H2OApp.main(H2OApp.java:5)
  </code></pre>
  
  <p>i can't access h2o even if i changed the port
  i tried reinstalling java and h2o but no luck so far</p>