I have a client who has a cisco router provided by a 3rd party goverment agency. This router has proxy arp enabled on the local network interface. I've been unsuccesful in finding anyone at the agency that knows enough to disable the 'feature' on their router.
Can anyone thing of anything I can do to mitigate the effects of the proxy arp service from the switch?
The clients network is configured as 172.16.0.0/16 if any of the clients on 172.16.0.0 - 172.16.0.255 attempt to access a server with anything but a 0 in the 3rd octet or any thing in another ip range the router responds with its mac address causing a failure to communicate between two devices.
This is not as horrible as it might have been as I've been able to come up with solutions here and there to mitigate the effects however a more complete solution would be helpful as the issue is always causing some minor headache.
I've got a couple of options on the switch to connect to. It's currently connected to a Linksys managed 48port but there is also a older Cisco switch in the stack that could be leveraged if needed.