Hyper-V nic issue

  • Hi,

    I have a powerful Hyper-v server based on server 2012 for home for media and other activities. I wanted to remove my old Cisco 5510 and replace it with a virtual pfsense router. When I add the 5 nics required (WAN/HOME/GUEST/DEV/MGMT) it only sees the first 3. On boot it presents an error "hm3 attach returned 12".

    These are being presented to the hyper-v server via a trunk and then tagging the VLANS on the interfaces on the VM.

    What am I doing wrong and how can I fix?


  • it's been discussed in this thread

    If you can, upgrade your Hyper-V host, I got more than three on my 2012R2 without problems

  • Thanks for your reply.

    I upgraded the server to 2012 r2 today and it works perfectly. All 6 nics recognised and working.

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