A very simple redirect (to an http page) after join WiFi

[GiovanniG]

You can add an option in DHCP server: number 114 with string value of your URL (single quotes).
Then put that in an option set, and attach that option set to your DHCP server.

That would work according to RFC 8910, but in practice it will not work because nobody ever requests that option.
But it would be the clean way that would not require tricks with hotspot and redirecting…

Thanks for help! I have no idea what can be “single quotes”, please explain me, thanks. Is it correct to put 114 like this?