NbtAddress[] addrEntry = (NbtAddress[]) addrEntryField.get(nameQueryResponse);
        assertNull(addrEntry[0], "NbtAddress should be null when address is zero");
    }

    @Test
    void toString_shouldReturnExpectedFormat_withNullAddrEntry() throws NoSuchFieldException, IllegalAccessException {
        // Set 'addrEntry' field to null for this test case
        Field addrEntryField = NameServicePacket.class.getDeclaredField("addrEntry");