问题在于那些模拟客户端的IP地址不唯一

the problem is with the ip-address for those simulated clients NOT being unique

不，问题在于您只能通过其IP地址识别客户端。您应该使用IP：port，例如，通过 DatagramSocket.getRemoteSocketAddress（）。

No, the problem is that you are only identifying clients by their IP address. You should use IP:port, for example, via DatagramSocket.getRemoteSocketAddress().

然后可以通过在单个主机上运行100个客户端程序实例。

Then you can test by running 100 instances of your client program in a single host.