This can be done? maybe using scritps? right now wlan 2 is a virtualAP whiout password in order to allow clients to get free internet, and is using my auxiliary gateway... my main gateway is only used for my internal network, BUT if gateway 1 is down, gateway 2 is used, at this point i dont want anyone conected to the free wifi to use internet, as we need the full bandwidth.

I dont want to block traffic, ill like to disable the wlan2 interface.