IP da maquina, sem pegar do ISA

import java.net.InetAddress;
import java.net.UnknownHostException;

public class IPAdress {

  public static void main(String[] args) {
    try {
      System.out.println(InetAddress.getLocalHost().getHostName());
      System.out.println(InetAddress.getLocalHost().getHostAddress());
      
    } catch (UnknownHostException e) {
      e.printStackTrace();
    }

  }

}