public void NotEqualsTest()
        {
            var r1 = new IpAddressRange(IPAddress.Parse("1.2.3.4"), IPAddress.Parse("4.3.2.1"));
            var r2 = new IpAddressRange(IPAddress.Parse("5.6.7.8"), IPAddress.Parse("8.7.6.5"));

            Assert.IsFalse(r1.Equals(r2));
            Assert.IsFalse(r2.Equals(r1));
        }
        public void EqualsTest()
        {
            var r1 = new IpAddressRange(IPAddress.Parse("1.2.3.4"), IPAddress.Parse("4.3.2.1"));
            var r2 = new IpAddressRange(IPAddress.Parse("4.3.2.1"), IPAddress.Parse("1.2.3.4"));

            Assert.IsTrue(r1.Equals(r2));
            Assert.IsTrue(r2.Equals(r1));
        }