@Test
public void test31BitPrefixIpRangesOverlapdFail() {

    String gw;
    String ip1;
    String ip2;
    for (int i = 10, j = 12; i <= 254; i++, j++) {
        gw = "192.168.0." + i;
        ip1 = "192.168.0." + i;
        ip2 = "192.168.0." + j;
        final boolean doesOverlap = NetUtils.ipRangesOverlap(ip1, ip2, gw, gw);
        assertTrue("It overlaps!", doesOverlap);
    }
}