@VisibleForTesting
    static boolean isInPriorNetwork(String ip) {
        ip = ip.trim();
        for (String cidr : PRIORITY_CIDRS) {
            cidr = cidr.trim();
            IPAddressString network = new IPAddressString(cidr);
            IPAddressString address = new IPAddressString(ip);
            if (network.contains(address)) {
                return true;
            }
        }
        return false;
    }
@Test
    public void cidrTest() {

        List<String> priorityCidrs = FrontendOptions.PRIORITY_CIDRS;
        priorityCidrs.add("192.168.5.136/32");
        priorityCidrs.add("2001:db8::/32");

        FrontendOptions frontendOptions = new FrontendOptions();
        boolean inPriorNetwork = frontendOptions.isInPriorNetwork("127.0.0.1");
        Assert.assertEquals(false, inPriorNetwork);

        inPriorNetwork = frontendOptions.isInPriorNetwork("192.168.5.136");
        Assert.assertEquals(true, inPriorNetwork);
        
        inPriorNetwork = frontendOptions.isInPriorNetwork("2001:db8::1");
        Assert.assertTrue(inPriorNetwork);
    }