Conceptually, it’s fairly easy to understand - nftables, relayd, likely some firewall application.
However, is it as simple as configuring the WAN port as the WiFi interface and leaving it at that? Note that I’m not bothered about double NAT since I won’t be opening any ports, and the main router cannot be touched.
I do want my own SSIDs, my VLANs, control over the firewall etc. Basically, my own network space. If anyone has done this/has an idea of the problems I might run into, please do comment!
Appreciate the help!
He mentioned that he wants to create Second level Nat, that will require new IP addresses and DHCP in the subnet