Captive portal JUST for dns

[pedrolima88]

Hello sirs,
I would like use captive portal to dns requests, but the captive never show login page. I think the cap. just work as gateway, no as dns request.

I would like implemnt captive portal for 120 APs, but only for dns server, no as gateway.

ALL aps will have a ip for dns and the dns will resolve the address after logon page.
There is a way to do that by pfsense? I dont find nothing. :S

Thanks for all!