如何仅 Ping IPv4?

How to Ping for IPv4 only?

我知道路由器的 IPv4 地址。但是当我使用 TTL = 1 Ping 时,我没有得到那个 IP。相反,我得到了它的 IPv6 地址。 (我知道 address.MapToIPv4() 但那仅适用于已更改为 IPv6 的 IPv4。)

那么如何仅 ping IPv4(如 tracert's /4 switch)?

var reply = new Ping().Send("example.com", 10000, new byte[] { 1 }, new PingOptions(1, true));

查看源代码(Reference Source, GitHub), if the parameter passed to Send() is a name then Dns.GetHostAddresses() 用于解析它,返回的第一个地址就是所使用的地址。因此,如果第一个地址是 IPv6 地址,那么该地址将被 ping 并且有无法改变这种行为。

相反,您可以调用 Dns.GetHostAddresses() yourself, filter the results to include or prefer IPv4 addresses, and pass that to Ping.Send():

IPAddress addressToPing = Dns.GetHostAddresses("example.com")
    .First(address => address.AddressFamily == AddressFamily.InterNetwork);

using (Ping ping = new Ping())
{
    PingReply reply = ping.Send(addressToPing, 10000, new byte[] { 1 }, new PingOptions(1, true));

    // Do something with reply...
}