Hotspot, allowing one router's mac full access

I have the following setup:

a RB450, with 3 411’s connected to it on ethernet. I want two of the 411’s wireless clients to authenticate on a hotspot on the 450’s ethernet interface. So I have bridged the 411’s. This is working fine.

On the last 411 I have a lot of traffic coming through it because it is a link not an access point. So on the hotspot “hosts” page I get a lot of IP’s popping up the whole time as the packets arrive.

Is there a way that I can have this 411 bypass the Hotspot. Simple putting in its IP and Mac into the IP Bindings list doesnt work because a lot of traffic is coming through it so it’s IP changes the whole time. The mac stays constant though.

Simplest solution: Connect the RB411 that is not to go through the Hotspot on a different interface that doesn’t have a Hotspot running on it.