@Test
public void test31BitPrefixFail() {

    final String ipAddress = "192.168.0.2";
    final String cidr = "192.168.0.0/31";
    final boolean isInRange = NetUtils.isIpWithtInCidrRange(ipAddress, cidr);
    assertFalse("Out of the range. Why did it return true?", isInRange);
}