InetAddress.getAllByName(hostname) is giving only IPv4 address on a dual stack machine with build 66. With build 65 its giving both v4 and v6 addresses on a dual stack machine. With build 66 I have checked this on Linux RH 6.2 dual stack machine, Solaris sparc8 dualstack and Solaris 8 x86 dual stack machine.

On Solaris sparc 8 V6 only machine InetAddress.getAllByName(hostname) gives
the following exception. same works find with build 65.

java.net.UnknownHostException: marsbase
        at java.net.InetAddress.getAllByName0(InetAddress.java:785)
        at java.net.InetAddress.getAllByName0(InetAddress.java:755)
        at java.net.InetAddress.getAllByName(InetAddress.java:749)
        at GetIP.main(GetIP.java:11)



How to reproduce it:
-------------------

1. Take the below pasted code and execute ..

import java.net.*;
import java.io.*;

public class GetIP {


   public static void main(String[] arg)
   {
       try {

         InetAddress[] iadr = InetAddress.getAllByName(arg[0]);
        System.out.println("iadr length " + iadr.length);

        System.out.println("host name " + arg[0]);
        InetAddress iadrnic = InetAddress.getByName(arg[0]);
        System.out.println("AFter getting iadr ");

        NetworkInterface niface = NetworkInterface.getByAddr(iadrnic);

        System.out.println("AFter getting niface");

        System.out.println("network interface " + niface);

         for(int i=0; i< iadr.length; i++)
         {
          System.out.println("ip address : " + iadr[i].getHostAddress());
          System.out.println(" Host Name :" + iadr[i].getHostName());
          //System.out.println("family " + iadr[i].getFamily());
          System.out.println("Host aadd byte arr " + iadr[i].getAddress());
          if(iadr[i] instanceof Inet4Address)
                System.out.println("v4 address");
          if(iadr[i] instanceof Inet6Address)
                System.out.println("v6 address ");

          if(!iadr[i].isMCOrgLocal()) {
              System.out.println("NOt org local scope");
           }
         // InetAddress[] iadrtest = InetAddress.getAllByName(iadr[i].getHostName());
          InetAddress iadrtest = InetAddress.getByName(iadr[i].getHostName());
          System.out.println("working....");
         }

      } catch(Exception exp) {
         System.out.println("exp mesg " + exp.getMessage());
         exp.printStackTrace();
      }
   } // End of main

}


Execution output:
-----------------

on Solaris 8 x86 machine ifconfig -a

ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
iprb0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 10.7.130.11 netmask ffffff00 broadcast 10.7.130.255
lo0: flags=2000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6> mtu 8252 index 1
        inet6 ::1/128
iprb0: flags=2000841<UP,RUNNING,MULTICAST,IPv6> mtu 1500 index 2
        inet6 fe80::2d0:b7ff:fe9e:e0c8/10


With build 65:
--------------
java GetIP hyperdrive
iadr length 2
host name hyperdrive
AFter getting iadr
AFter getting niface
network interface name:iprb0 (iprb0) index: 2 addresses:
/10.7.130.11;
/[fe80::2d0:b7ff:fe9e:e0c8];

ip address : 10.7.130.11
 Host Name :hyperdrive
Host aadd byte arr [B@76a746
v4 address
NOt org local scope
working....
ip address : [fe80::2d0:b7ff:fe9e:e0c8]
 Host Name :hyperdrive
Host aadd byte arr [B@5ff48b
v6 address
NOt org local scope
working....


With build 66:
----------------

java GetIP hyperdrive
iadr length 1
host name hyperdrive
AFter getting iadr
AFter getting niface
network interface name:iprb0 (iprb0) index: 2 addresses:
/fe80::2d0:b7ff:fe9e:e0c8;
/10.7.130.11;

ip address : 10.7.130.11
 Host Name :hyperdrive
Host aadd byte arr [B@4ac268
v4 address
NOt org local scope
working....


With build 66 on V6only machine:
-------------------------------
java GetIP marsbase
java.net.UnknownHostException: marsbase
        at java.net.InetAddress.getAllByName0(InetAddress.java:785)
        at java.net.InetAddress.getAllByName0(InetAddress.java:755)
        at java.net.InetAddress.getAllByName(InetAddress.java:749)
        at GetIP.main(GetIP.java:11)
exp mesg marsbase

Other Information:
-----------------

Same thing is showing up on linux red hat 6.2 dual stack machine.