How to setup chillispot on dd-wrt to redirect to external site?

Question

Perl

I have a router with dd-wrt, installed freeradius from mysql to ubuntu, set everything up, now when I connect to the network, the default chillispot authorization page opens. Upon authorization, the page redirects the client to the destination. It is necessary that a certain page opens immediately upon connection, say google.com To do this, I created a test user and tried to manually enter the username password and the link of the destination page in the Chillispot page source, but until you click on the "Login" button, the redirect does not occur. Tell me what you need to do for automatic authorization and redirect? Here is a link to the file .
Threat One more question: when you disconnect from the network and then reconnect, the hotspot page does not appear, that is, the device remains logged in after disconnecting from the network, where can I see / change this time?