Hello,
I have a problem which is driving me crazy for a few days now. I have a Windows 8.1 Enterprise desktop PC with Hyper-V installed on it. I have created an External virtual switch in Hyper-V manager and connected it to my one and only physical wired network adapter. I have ticked the checkbox to allow management host to share the adapter. I have installed a Windows 2008 R2 Standard VM on it and connected the network adapter to the External virtual switch.
The problem:
The host has internet and LAN connectivity.
The VM has no internet nor LAN connectivity, but is able to ping the host.
The host can ping the VM.
The VM does not receive an IP address via DHCP (yes there is a DHCP server active in our LAN)
Assigning a static IP address to the VM does not work (it can only ping the host, not the LAN or internet).
It seems like the External virtual switch is acting like an internal one. Atleast, it shows the same behaviour. The network card in the desktop is an Intel 82578DM wired network card.
What am I doing wrong here? I am using the exact same setup as on our 2012 Datacenter servers which are working perfectly fine. Is there maybe something wrong with the network adapter driver?