Discovery problem b/c I use same IP on LAN side of all CPEs.

I hope this makes sense.. anyway here goes..
I’m having a problem discovering devices on my network.
All of my CPE’s they have a different IP on the wan side, and I use the same IP on the lan side (192.168.200.1/24 with dhcp/nat).
Discovery finds the first CPE, scans it with SNMP, then adds the 192.168.200.1 IP to that device. When it finds the next CPE it thinks that it is the same device as the first one b/c the IP’s are the same and skips it.

I’ve tried adding that IP range to a blacklist but it still adds it onto the devices it finds..

I need/want to use SNMP to monitor the traffic, signal, etc so simply disabling snmp isn’t an option.

Is there anyway to tell the dude to just ignore an address if it is found with snmp?

Thanks,
Gerard