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I have a Hyper-V environment on Windows Server 2012 Datacenter. One of the Virtual Machine (VM) has a License Server. One of the license was generated due to the Mac address that the VM had at that moment. My VMs take the MAC addresses dynamically from the Hyper-V pool. I will change the Mac address configuration in only that VM from dynamic to static MAC address. I will put the MAC address that the VM had at that moment (the license file gives me the MAC at that moment) but I would like to exclude that MAC address from the Hyper-V MAC address pool to avoid conflicts. How can I exclude an specific MAC address from the Hyper-V pool?

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  • What you ought to do is to "rehome" your license to the static MAC address. That might necessitate a call to the vendor for that particular piece of software.
    – joeqwerty
    Oct 6, 2015 at 18:16
  • Unfortunately, the vendor attache the license to a MAC address.
    – Felix D.
    Oct 6, 2015 at 18:48
  • What I'm saying is that you ought to speak to the vendor about releasing the license from the dynamic MAC address and applying it to the static MAC address. I have to think that in today's virtualized world that they've dealt with this before.
    – joeqwerty
    Oct 6, 2015 at 18:58
  • Definitely, I will speak to the vendor to see if they can release a dynamic MAC address version.
    – Felix D.
    Oct 6, 2015 at 19:43

1 Answer 1

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Probably easier to just change the MAC address range (pool) to something else that doesn't include the address in question. Microsoft has set aside 00-15-5D-* for hyper-V so change a part past that. So if the pool was:

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you would change something in the -01-F7- part of the minimum and maximum.

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  • Hi Brian, thank you for your answer. I was thinking on that too. I think it will be a good solution.
    – Felix D.
    Oct 6, 2015 at 18:47

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