@Override
    public String toString() {
        return toStringHelper(getClass())
                .toString();
        // TODO: need to handle options
    }
@Test
    public void testToStringRS() throws Exception {
        RouterSolicitation rs = deserializer.deserialize(bytePacket, 0, bytePacket.length);
        String str = rs.toString();

        // TODO: need to handle Options
    }