Android取得デバイスの実際のipアドレス

コードを直接投げて、android 5、android 9テスト

public String getLocalIpAddress() {
        try {
            for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
                NetworkInterface intf = en.nextElement();
                for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress() ** inetAddress instanceof Inet4Address) {//  Inet6Address      ipv6   
                        return inetAddress.getHostAddress();
                    }
                }
            }
        } catch (SocketException ex) {
            ex.printStackTrace();
        }
        return null;
    }