static boolean isInvalidLocalHost(String host) {
        return StringUtils.isBlank(host)
            || isAnyHost(host)
            || isLocalHost(host);
    }
@Test
    public void isInvalidLocalHost() throws Exception {
        Assert.assertTrue(NetUtils.isInvalidLocalHost("0.0.0.0"));
        Assert.assertTrue(NetUtils.isInvalidLocalHost("127.0.0.1"));
        Assert.assertTrue(NetUtils.isInvalidLocalHost(""));
        Assert.assertTrue(NetUtils.isInvalidLocalHost(" "));
        Assert.assertTrue(NetUtils.isInvalidLocalHost(null));
    }