IP Address checking got Error
<p>I am with the help of below condtion checking whether the IP is reachable or not</p>

<pre><code>if ( InetAddress.getByName(server1IPAddress).isReachable(1000) == false) 
{         
  ...... 
  ......
}
</code></pre>

<p>Its working correctly with normal IP address 192.168.1.158 
but when i include port number along with the an external IP 61.17.172.4:85 It shows a error <strong><code>UnknownHostException</code></strong>.</p>

<p>Will any one help me pls </p>
