TLDR: I want to play lan games over a L2TP VPN. And everything works for most games.
But a few games don't allow manually entering an IP and only look for games in your IP range. Which means a standard VPN across networks with routes between isn't enough to make it work.
I want to play old games online with a friend over a VPN connection without using software like hamachi. I've already setup a VPN across 2 mikrotik routers between our networks and everything works between them as you would expect. I currently am setup with my network being 192.168.1.0/24 and his 192.168.10.0/24
A few example games are C&C red alert, and splinter cell chaos theory. They don't allow IP addresses to be entered and don't appear to look for IP addresses for games outside of your main network.
I was looking into the solutions and I was curious if I could do a 1:1 nat across some fake IP. like all traffic to
192.168.1.10 would go to 192.168.10.249 (The end IP) and
192.168.10.10 would go to 192.168.1.100 (The other end IP)
I played with Src and Dst nats to no luck.
Does anyone have advice on this topic?