VM cannot get IP and shows host MAC in event logs

Question

I have a strange issue where the VM on a user's laptop worked fine in the office with a Wireless NIC but when he got home we began having some problems (no network in the VM, only get 169.x.x.x IP in the VM, host network connection drops when we try
to access or configure the networking inside the VM).
Here is what I know so far:
Bridge exists on host (wireless NIC to virtual NIC) and is enabled
Adapter in VM has MAC of 00-15-5D-0A-A5-00, cannot get IP
VM settings for the wireless NIC show the MAC is Dynamic and the one assigned is within the range setup on the Virtual Switch
Adapter on host has MAC of 9C-4E-36-AC-83-68, gets IP of 192.168.0.14
In the VM, you cannot renew or assign an IP, it says the MAC exists on the network and has an address assigned.  Network connectivity also drops if you try to renew the IP
In the system event logs on the VM, I see TCPIP event 4199, exact message is - The system detected an address conflict for IP address 192.168.0.14 with the system having hardware address 9C-4E-36-AC-83-68.
There are no errors in the event logs on the host.
Deleting the NIC inside the VM and removing/re-adding it to the VM settings does not resolve it
Deleting and recreating the virtual switch does not resolve it
The option to allow the management OS to also use the wireless NIC is enabled on the virtual switch.
The wired connection also worked in our office during the build and testing but he doesn't not have a cable at home for me to test the wired there.
We have another machine which is configured the same way and is working correctly, both in the office and offsite.
Why is the VM trying to use the host MAC to get an IP, shouldn't it be using the one assigned by Hyper-V?  Could this be an issue with his home office network or maybe specifically with his WAP?  What other items could cause this?
I have asked my user to go connect to a wireless network in a different location and test it but I haven't heard back from him yet.
Thanks in advance for any suggestions.

Answer 1

Hi Milos,
1 - Unfortunately I can't test this, the router is supplied by his ISP and is not one that we have any management capabilities on.
2 - Any time I access network information in the VM (even just to run "ipconfig /all" at a command line), the network drops temporarily on the host and I loose access to it.
3 - I've not used this before, I'll check it out.
It seemed really odd to me that the VM showed the host MAC in the event logs when everything else in the VM shows the one assigned by Hyper-V.
Do you know if the "Virtual Networking and Wireless network adapters" entry in Ben Armstrong's Virtualization blog still applies in Windows 8.1?  It won't let me post the link to it directly, sorry.
I've seen it referred to recent posts but it's from 2005.
It makes sense if it is since symptom #2 sounds like what I am seeing.