I have a late 2013 iMac that experiences LAN connectivity issues from time to time on my home network. Periodically it will lose connectivity with the LAN, it has static network settings, and the only way to resolve the issue is usually a reboot. I have tried disabling the ethernet port, the wifi works fine, then re enabling the ethernet port, this works sometimes, but not all the time. Right now the network utility is showing 6 Recv errors on the ethernet card. I know the cable is fine, the switch is fine, its very odd. Any ideas? This iMac was bought as a refurb back in June.