We used a PC to build a standby server in case main one crashes. It has a realtek-based NIC. So I loaded the free Server 2012 Hyper-v Edition and created a VM to which I can attach the vhdx for the main vm running Server 2008 should the main host (it runs full Server 2012) crash. Host and Server 2008 guest fun perfectly.
As I am not a powershell wiz and none of the office PCs have windows 8 I decided to get a copy of Windows 8.1 pro and load it into another vm on the same standby host and run RSAT that way (no active directory).
Everything works except the Windows 8 guest every 2-3 minutes would lose network for a few seconds. Still can get management tasks done, just extremely annoying.
If I were to do ping <windows8 vm ip> -t I can see how it gets replies, then 2-3 packets get timed out, then replies resume till the next time. Like I said I can stay connected to the host or to the Server 2008 vm all day, so it seems to me the NIC itself is fine.
Windows 8 guest has all updates and runs the latest integration tools. I tried theHKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP\Parameters\DisableTaskOffload registry entry and it helped some, but not completely. Would appreciate any advice on this.
Thank you
Vassili