IPv6 full string from IPAddress

IPv6_full_string

void Main()
{
	string str = "2a00:1450:4010:c04::71";
	
	System.Net.IPAddress addr =  System.Net.IPAddress.Parse(str);
	
	var bytes = addr.GetAddressBytes();
  var preferredFormatString = string.Format("{0:x2}{1:x2}:{2:x2}{3:x2}:{4:x2}{5:x2}:{6:x2}{7:x2}:{8:x2}{9:x2}:{10:x2}{11:x2}:{12:x2}{13:x2}:{14:x2}{15:x2}", bytes [0], bytes [1], bytes [2], bytes [3], bytes [4], bytes [5], bytes [6], bytes [7], bytes [8], bytes [9], bytes [10], bytes [11], bytes [12], bytes [13], bytes [14], bytes [15]);
  
  Console.WriteLine (preferredFormatString);
  Console.Write(addr);
}

// Define other methods and classes here