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

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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


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