Can I determine the source IP address for an SNMP Get or Set request

I’m using a ConnectCore 9P 9215 (NET+OS 7.3) and I need to be able to identify the source IP address of the client that is sending me an SNMP Get or Set request.

With NAT and other modern routing, there’s no easy way to know the correct IP of your source. For example, if client is on a home/small business network, you’ll be seeing the router/fw device, which won’t allow a NEW reverse link - will treat them as ‘attacks’ since it knows what requests are outstanding and won’t allow something new/odd to pass back to client.