public void GetHostIdentifierEx()
        {
            var ip = new IPAddress(Ba(10, 20, 30, 40, 10, 20, 30, 40, 10, 20, 30, 40, 10, 20, 30, 40));
            var m = new NetMask(Ba(255, 255, 255, 0));

            IPAddress id = ip.GetHostIdentifier(m);
        }
        public void GetHostIdentifier()
        {
            var ip = new IPAddress(Ba(10, 20, 30, 40));
            var m = new NetMask(Ba(255, 255, 255, 0));

            IPAddress expectedId = new IPAddress(Ba(0, 0, 0, 40));
            IPAddress id = ip.GetHostIdentifier(m);

            Assert.AreEqual(expectedId, id);

            // TODO: Add more tests!
        }