Problem
-------
getByName implemented incorrectly on Solaris.

getByName from java.net.InetAddress package does not behave
correctly when passed numerical string for hostname.
The documentation (JDK/1.2beta3) states that getByName when given either a machi
ne name or IP address will throw a UnknownHostException if no IP address for that host could be found.

This is only true if the hostname is a alpha-numeric value. If the hostname is n
umeric only the getByName call will never throw the exeception.
eg java TestInetAddress 9 --> 9 = 9/0.0.0.9

The reason for this is that on solaris platform the getByName functions calls th
e peer code from x/open gethostbyname. This behaviour is acceptable for gethostbyname because numeric only hostnames are invalid on solaris due to secure rpc.
This behaviour is not valid for java which is machine independant.

Code Example
------------
Java example

*************TestInetAddress.java******************
import java.net.InetAddress;

public class TestInetAddress
{
public static void main(String[] args)
  {
   System.out.println ("executing TestInetAddress with: " + args[0]);
    try
      {
        System.out.println(args[0] + " = " +
                           InetAddress.getByName(args[0]));
      }
    catch (Exception e)
      {
        System.out.println ("Executing exception handler");
        e.printStackTrace();
      }
  }
}
*************************************************
Underlying peer code example

*************TestInetAddress.cc******************
#include <stdio.h>
#include <iostream.h>
#include <netdb.h>
#include <arpa/inet.h>

extern int h_errno;
void pr_inet(char **h_addr_list);

int main(int argc,char **argv)
{
  struct hostent *my_hostent = NULL;
  char **h_addr_list;

  cout << "executing testinetaddress for " << argv[1] << endl;
  my_hostent = gethostbyname(argv[1]);
 
  if (my_hostent == NULL ) {
    cout << "unable to get host address for: " << argv[1] << endl;
    return 0;
  }
  h_addr_list = my_hostent->h_addr_list;
  pr_inet(h_addr_list);
  return 0;
}

void pr_inet(char **h_addr_list)
{
  struct in_addr *ptr;
  while ( ( ptr = (struct in_addr *)*h_addr_list++ ) !=NULL ) {
    cout << "ip-address: " << inet_ntoa(*ptr) << endl;
  }
}
*******************************

To Reproduce
------------
1. compile code
    javac TestInetAddress.java
2. run with noexistent ip address
    java TestInetAddress 9
3. result: noexception
     9 = 9/0.0.0.9
4. if run with alpa-numeric hostname
    java TestInetAddress a9
5. result: exception thrown
    java.net.UnknownHostException: a9
6. Compile peer code example
     CC -o testinetaddress testinetaddress.cc -lxnet
7. run with noexistent ip address
    testinetaddress 9
8. ip-address: 0.0.0.9