要同时获取IPv4和IPv6地址，可以通过以下C#代码实现：
using System;
using System.Net;
using System.Net.Sockets;
class Program
{
static void Main()
{
string hostName = Dns.GetHostName();
IPAddress[] addresses = Dns.GetHostAddresses(hostName);
foreach (IPAddress address in addresses)
{
if (address.AddressFamily == AddressFamily.InterNetwork)
{
Console.WriteLine("IPv4 Address: " + address.ToString());
}
else if (address.AddressFamily == AddressFamily.InterNetworkV6)
{
Console.WriteLine("IPv6 Address: " + address.ToString());
}
}
}
}
这段代码首先获取主机名，然后使用Dns.GetHostAddresses()方法获取主机的所有IP地址。然后通过遍历IP地址数组，分别检查每个IP地址的AddressFamily属性，以区分IPv4和IPv6地址。最后打印出相应的IPv4和IPv6地址。
