I'm searching for a setup where one Windows with one ethernet card is able to handle more then 65k open IPv4 TCP connections -- yes, it's not possible per default by the specification.
I've found a nice tutorial how to setup How to tune the TCP/IP stack for high volume of web requests Windows and Linux regarding maximum usable ports.
My idea would be to setup multiple IP address per ethernet controller (MAC address) and let the DNS server round robin over CNAME Resource Records.
The server application running on the Windows machine would bind to multiple IP addresses attached to the same MAC address (ethernet controller).
The clients would be redirected to different IP address by DNS server served by the same server.
Where is defined -- official Microsoft documentation in printed or online appreciated -- how many IP addresses can be set per ethernet controler? (Try it out is not reliable)
Are there any other ideas how to solve the limitations without using additional infrastructural changes e.g. visualization or additional nic?