C# IPv4, IPv6

 

string strAddress = "10.10.10.10";

            IPAddress adress = IPAddress.Parse(strAddress);

            if(adress.AddressFamily == AddressFamily.InterNetworkV6) // Check IPv6

            {

                if(adress.IsIPv4MappedToIPv6)

                    //Convert IPv6 to IPv4

                    adress = adress.MapToIPv4();   

            }

            string strMyIP = string.Empty;

            if (adress.AddressFamily == AddressFamily.InterNetwork) // Check IPv4

            {

                strMyIP = adress.ToString();

                if (string.IsNullOrEmpty(strMyIP))

                    return false;

            }

            else

                return false;