I already did a configuration like this on my OpenWRT even before Specter's exploit comes out. Looking at this tool by @irefuse I noted he changed LuCI to port 8080, I think there's no need for that.Instead of changing ports you could just use User's Guide. Edit the file "/etc/dnsmasq.conf" and add the line "address=/manuals.playstation.net/[router ip]" then go to "/www", by issuing the command "cd /www", run the command "mkdir -p document/en/ps4" then copy exploit files over to "ps4" folder.The "en" in command "mkdir -p document/en/ps4" should match your language, to know yours just go to User's Guide (or whatever name is in your language) and copy the letters from there.After this, when accessing User's Guide your PS4 will be redirected to the exploit on your router, not to the original User's Guide. Of course DNS must be provided by your router. After that if you want you can completely block PS4 Internet access on firewall using some rules.