I've this annoying problem, I'm using an ASA 5510 for vpn termination.
Into this device terminate vpn also some asa configured as hw client, with nem enable.
These hw client are connected to the Internet with an ISP that assign an outside ip address that overlaps with us ip addresses.
In details, we have an ASA with:
NEM connect properly for inside network, but ASA try continuously to terminate also outside ip with nem, and my ASA5510 logs a huge quantity of these errors:
ACL does not match proxy IDs src:192.168.1.1 dst:192.168.50.0
Logs are 4GB every day!!
Is there a way to avoid this problem?