def _vn_decode(self, msg):
        """VN: Version information."""
        elkm1_version = "{}.{}.{}".format(int(msg[4:6], 16), int(msg[6:8], 16),
                                          int(msg[8:10], 16))
        xep_version = "{}.{}.{}".format(int(msg[10:12], 16), int(msg[12:14], 16),
                                        int(msg[14:16], 16))
        return {'elkm1_version': elkm1_version, 'xep_version': xep_version}
VN: Version information.