DHCP via Hyper-V VM, Server2012r2 Hyper-V host, clients not getting IP address

Question

You have to authorize a dhcp server as Britv8 says. That's the only way it'll start dishing out leases. That's standard for Windows DHCP server in an AD Domain.
Also there's 0 reason to mention Hyper-V here. The whole point of virtualization is to do hardware level abstraction.

Answer 1

I recently encountered this. Setup:
Initial setup of the system was at a different location from its final destination, with different network equipment (switches) between the two. No teaming is involved, however.
Set up the system at its final destination, with DHCP via a Hyper-V VM (Server2012r2), Server2012r2 Hyper-V host, physical clients on the lan were not getting IP address.
The physical server box has a 4-port Intel Gigabit ethernet card.
I moved the setup (Hyper-V Virtual Switch manager) so that the interface for the DHCP server VM was isntead using one of two built-in Broadcom adapters.
While this topic seemed promising,
http://community.spiceworks.com/topic/251317-hyper-v-vm-not-leasing-ip-s-dhcp
unfortunately, "fiddling about" was not what I was looking for as possible solution.
My notes for the resolution:
Hyper-V system running...
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