internal sealed class IPUtil
        {


            const string
                   ARGS = "/Cipconfig/all",
                   PROGRAM_NAME = "cmd.exe",
                   DYNAMIC_PREFIX = "DHCP";



            static Process process = null;

            static ProcessStartInfo startInfo;



            public static bool IsStatic()
            {

                string line;

                startInfo = new ProcessStartInfo();

                startInfo.FileName = PROGRAM_NAME;
                startInfo.Arguments = ARGS;
                startInfo.UseShellExecute = false;
                startInfo.RedirectStandardOutput = true;
                startInfo.CreateNoWindow = true;

                try
                {
                    process = Process.Start(startInfo);

                    using (StreamReader sr = process.StandardOutput)
                    {
                        while ((line = sr.ReadLine()) != null)
                            if (line.Trim().StartsWith(DYNAMIC_PREFIX))
                                return false;
                    }

                }
                finally { GarbageCollect(); }

                return true;

            }



            static void GarbageCollect()
            {

                if (process != null) 
                    process = null;

                if (startInfo != null) 
                    startInfo = null;


                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();

                GC.GetTotalMemory(true);

            }
        }

        public static bool IsStatic()
        {

            string query = "SELECT * FROM Win32_NetworkAdapterConfiguration"
                 + " WHERE IPEnabled = 'TRUE'";


            ManagementObjectSearcher mos = new ManagementObjectSearcher(query);
            ManagementObjectCollection mosCollection = mos.Get();


            foreach (ManagementObject mo in mosCollection)
            {
                try
                {
                    object result = mo["DHCPServer"];

                    return false;
                }
                catch { break; }
            }

            return true;
        }