DNS，gethostaddresses只返回一個IP地址

Question

我想獲得一個主機的所有IP地址，並需要將這些IP添加到防火牆例外規則。我正在使用stystem.net dns.gethostaddresses來獲取IP地址列表。但它只在任何時間點返回一個IP地址，而不是獲取與主機名關聯的所有IP地址。

這裏是代碼片段...

IPAddress[] arr=Dns.GetHostAddresses(ConfigurationSettings.AppSettings["Host"].ToString()); 

      foreach (IPAddress ip in arr) 
      { 
       Console.WriteLine(ip.ToString()); 
      } 

Answer 1

假設你正在運行在同一臺計算機上的代碼，它有多個IP Addresses.This代碼多個接口工作對我來說

foreach (NetworkInterface netInterface in NetworkInterface.GetAllNetworkInterfaces()) 
    { 
    Console.WriteLine("Name: " + netInterface.Name); 
    Console.WriteLine("Description: " + netInterface.Description); 
    Console.WriteLine("Addresses: "); 
    IPInterfaceProperties ipProps = netInterface.GetIPProperties(); 
    foreach (UnicastIPAddressInformation addr in ipProps.UnicastAddresses) 
    { 
     Console.WriteLine(" " + addr.Address.ToString()); 
    } 
    Console.WriteLine(""); 
    }