Openvpn exclude ip in pool

I have an OpenVPN server running on a Linux Ubuntu box. Multiple clients connect to this server (500+) and that is why I set the server-bridge option like this:

server-bridge 10.0.100.1 255.255.0.0 10.0.200.1 10.0.210.254

This works perfectly. The clients get a dynamic IP address, and it goes from the 200 block to the 201 block when the number of client exceed 255.

I have an internal application that connects to these clients, but this application crashes on IP addresses 10.0.200.255 and 10.0.201.0.

These IP addresses are in the range I supplied, but I can't use them.

Is there a way to exclude them from my pool?

Or do I need change my setup?