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ISP :

Hello,
I want to install a voucher based wireless network for our guests.



vlan:
AP ports, router and controller are set to TRUNK 1/2T on the switch. AC500 GE1 is set to 1/2T GENERAL and the Router accepts VLAN1/2T in "mixed mode".
routes:
Switch:
0.0.0.0/0 > 192.168.0.100
Router:
192.168.101.0/24 > 192.168.101.1(2nd IF on the Router)


When I try to connect to the guest network I get redirected to the voucher authentification page as planned. However it redirects you to 192.168.101.253 instead of the local 10.0.0.2.
This does obviously not work as the clients are not in the same subnet.
Using
10.0.0.1 (LANCOM) as the default GW does not route to 192.168.101.253
10.0.0.2 (Controller) as default GW does load the auth page, no connection to the internet.
10.0.0.3 (Cisco Switch L3) as default GW does not route to 192.168.101.253 either.

What works however is setting the GW to 192.168.0.2, login in with a voucher, setting the GW back to 10.0.0.1 or 10.0.0.3 to access the internet.

Is there a way to change the default URL for the splashpage or a simple solution to setup a route to the controller?

I'm grateful for every piece of advise!