Nope it just doesn’t support it. I tinkered a bit in router config enabling IPv4/IPv6. But didn’t get IPv6 address from ISP. Still using ADSL2+

So, I can receive incoming traffic using IPv6 despite I don’t even have a public ip? (nv my ISP doesn’t support IPv6)

I cannot acquire a public ip on the top right, it is nearly impossible. Forwarded traffic will mostly be straight TCP and UDP traffic. The server at the top left must only forward all traffics to top right network somehow. It should not modify anything. I just need to make use of that public ip from my private network.

Thanks for the reply! I will research it a bit, I still lack tons of knowledge about networking, yet still learning.

I don’t think double NAT is my case. My ISP doesn’t provide me with a public IP.

Excuse my amateur drawing…