Hyper-V not getting IP Address for PXE Booting

[eliminatrix]

Hi All,

I'm trying to get a Windows installation happening within a Hyper-V machine from a WDS Server in a VM.

It's a bit of a confusing set up. I have my laptop which is running 2 VMs - One is Windows Server 2008 R2 (AD / DHCP / DNS), the second is Windows Server 2008 R2 running Windows Deployment Services. 

I then having a physical machine which is running Windows Server 2008 R2 with Hyper-V installed. They're all connected and communicating fine. They can all ping each other with no issues. Both the physical server and the WDS server are authenticated on the domain and logged in.

I have a physical NIC on the physical server that is connecting to my laptop via network cabling - which is how they all communicate.

Whenever I start up my Hyper-V machine to get it to retrieve an installation via the WDS server, nothing happens. The DHCP just times out. I've tried everything I can think of. The physical NIC in the physical server is a TP-Link TG-3468.

The NIC on the laptop is a Realtek PCIe GBE Family Controller - RTL8167.

Why can't the Hyper-V pick up an IP address for PXE booting?

Thanks in advance!

[The_Observer]

What are your network setting on the VMs, Settings / Network Adaptor /