src/main/java/org/firepick/IPv4Scanner.java
public static List<InetAddress> localhostNetworkAddresses() 
    throws UnknownHostException, SocketException 
  {
    List<InetAddress> result = new ArrayList<InetAddress>();
    InetAddress localhost = null;
    try {
  //    localhost = InetAddress.getLocalHost();
      throw new UnknownHostException();
    } catch(UnknownHostException ex) {
      logger.debug("localhostNetworkAddresses InetAddress.getLocalHost() failed");
    }
    if (localhost == null || localhost.getHostAddress().startsWith("127")) {
      Enumeration<NetworkInterface> n = NetworkInterface.getNetworkInterfaces();
      while (n.hasMoreElements()) {
	NetworkInterface e = n.nextElement();
	Enumeration<InetAddress> a = e.getInetAddresses();
	while (a.hasMoreElements()) {
	  localhost = a.nextElement();
	  if (localhost.isLoopbackAddress()) {
	    // ignore
	  } else {
	    result.add(localhost);
	  }
	}
      }
    }
    if (result.size() == 0) {
      result.add(localhost);
    }
    return result;
  }
public static List<InetAddress> localhostNetworkAddresses() 
    throws UnknownHostException, SocketException 
  {
    List<InetAddress> result = new ArrayList<InetAddress>();
    InetAddress localhost = null;
    try {
  //    localhost = InetAddress.getLocalHost();
      throw new UnknownHostException();
    } catch(UnknownHostException ex) {
      logger.debug("localhostNetworkAddresses InetAddress.getLocalHost() failed");
    }
    if (localhost == null || localhost.getHostAddress().startsWith("127")) {
      Enumeration<NetworkInterface> n = NetworkInterface.getNetworkInterfaces();
      while (n.hasMoreElements()) {
	NetworkInterface e = n.nextElement();
	Enumeration<InetAddress> a = e.getInetAddresses();
	while (a.hasMoreElements()) {
	  localhost = a.nextElement();
	  if (localhost.isLoopbackAddress()) {
	    // ignore
	  } else {
	    result.add(localhost);
	  }
	}
      }
    }
    if (result.size() == 0) {
      result.add(localhost);
    }
    return result;
  }
Return list of InetAddress for localhost that are not loopback addresses
(e.g., 127.0.0.1)

@return address list with size() >= 1