I have 2 server on the same network of the same name. I never have them running together so there is never a problem. I made the mistake of brining them both up at the same time yesterday and now when I shut one down the other (which is the one I need running) is dropping pings intermittently.
Both servers are running on ESX VMware on different hardware. I assume it's an ARP table somewhere that's causing the problem but not sure where?