@Godlike66 My scenario is that I need to use a dedicated hardware as router/firewall. I'm using PFSense here. The ideal solution is using my AX53 as main wifi router managing others using Easy Mesh....

I'm waiting for AX53 firmware update. Let me ask one little thing: if the problem is double NAT, why not just disable NAT? Sure, the user mus use valid IPs for internal network. Create an alert...