C#에서 IP 주소를 얻는 방법은 무엇입니까?

class Program{
   static void Main(string[] args){
      string IPAddress = GetIPAddress();
      System.Console.WriteLine(IPAddress);
      Console.ReadLine();
   }
   public static string GetIPAddress(){
      string IPAddress = string.Empty;
      IPHostEntry Host = default(IPHostEntry);
      string Hostname = null;
      Hostname = System.Environment.MachineName;
      Host = Dns.GetHostEntry(Hostname);
      foreach (IPAddress IP in Host.AddressList){
         if (IP.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork){
            IPAddress = Convert.ToString(IP);
         }
      }
      return IPAddress;
   }
}

192.168.1.1