Hyper-V on Windows 8.1 is messing with MAC address when sharing my Wifi card

Hello,
I'm using Hyper-V on Windows 8.1 to build a complete SharePoint Development environment.
All of my VM are following this scheme:
a "local" private network shared between the host and all VM, using a static IP address plan (192.168.10.0/24)
a RJ45 external network, attached to my physical ethernet card. This network uses DHCP protocol
a WIFI external network, attached to my wireless network card. This network also use DHCP protocol
When plugged on the ethernet card, I have no issue. Both the host and the guest OSes are getting a valid IP address.
However, when I try to connect on the wireless card, I get some weird errors. Actually, my guest OS are getting the same IP address than the host. This issue an IP address conflict.
Someone else got the same kind of behavior : Windows 8.1
Hyper-V : IP address conflict on Guest OS
I've checked my MAC address plan, and it seems correct.
Using WireShark (a tool I'm not used to I admit), I can see that all DHCP request of the guest os, are sending the host MAC address, and not the guest' one.
Does anyone have an answer to this weird behavior?
Thanks,
steve
Paying back the community for its help by writing articles :
Have a Nice Day.Net Blog

Hi Steve,
Please try the following step and then retry ipconfig /renew in your VM :
1. Configure the WI-FI router to assign a static IP address to the host’s wireless network adapter(the IP should not be in DHCP Pool).
2. On the host, configure the wireless network adapter to use a static IP address. The IP address will be the same address configured in step 1.
3. Using Hyper-V Manager, create an external network switch that is bound to the host’s wireless network adapter
Hope this helps
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.
Hi Elton,
First of all, thanks for your effort.
I will try your suggestion, but even if it works, it won't solve the actual root the issue.
Moreover, it is only relevant if I can control every wireless network I'm connecting to. What about if I travel and I connect with a customer wireless network? what about an hotel wireless network?
As I said, wireshark shows me DHCP requests using the wrong IP address. I strongly believe there's a bug somewhere between the wireless card driver and Hyper-v Mac-Bridge service.
Steve
Paying back the community for its help by writing articles :
Have a Nice Day.Net Blog

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