Why dual mode TcpListener must need to listen at IPAddress.IPv6Any for work correctly?

[GF-Huang]

If

var tcpListener = new TcpListener(IPAddress.IPv6Loopback, 12345);
tcpListener.Server.DualMode = true;
tcpListener.Start();

then

var client = new TcpClient();
client.Connect(IPAddress.Loopback, 12345);

get

System.Net.Internals.SocketExceptionFactory.ExtendedSocketException:
"No connection could be made because the target machine actively refused it.
[::ffff:127.0.0.1]:12345"

If modify new TcpListener(IPAddress.IPv6Loopback, 12345) to new TcpListener(IPAddress.IPv6Any, 12345), all works fine.

Why I can make a dual mode listener at loopback?

Platform:

Win10 20H2 x64, .NET 5, VS2019