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Bjarne_Ingelsson's avatar
Bjarne_Ingelsson
Copper Contributor
Sep 15, 2021

No network for Server 2022 in Hyper-v with 2012R2 host

Greetings,

I'm having network issues running virtual Server 2022 in Hyper-V with a Server 2012 host. 

Neither of my two Server 2022 VM's have any network connection...?

First one was an upgrade from (a working) Server 2016 and second a clean install.

 

The Hyper-V host in question has multiple VM's ( 2008 -> 2019 + Linux ) and none of them have any network issues, only the newly added 2022's. I also tried to set static ip, but no go...same problem.

 

And yes, the 2022's use the same virtual switch as the working ones.

 

I can see in the dhcp-server (running wireshark) that the failing servers are sending DHCP Discover(s), and the dhcp-server replying with Offer(s) but the 2022's ignores these requests.

 

Interestingly, when running a virtual 2022 in a Win10 Hyper-V is works...

 

So, known feature or..?

/Bjarne

Hyper-V
Networking
Windows Server
  • l33ttimmy's avatar
    l33ttimmy
    Sep 22, 2021

    Hello,

    I have a similar situation and was able to get connectivity by shutting down Server2022 VM >> Remove Network Adaptor >> +Add Hardware >> Specifying Legacy Network Adapter. Legacy NIC is limited to 100mbps but it might be a temporary workaround until you can get your Hyper-V version upgraded to a more current level. 

    Thanks,

    Tim

     Bjarne_Ingelsson 

  • l33ttimmy's avatar
    l33ttimmy
    Copper Contributor
    Sep 22, 2021

    Hello,

    I have a similar situation and was able to get connectivity by shutting down Server2022 VM >> Remove Network Adaptor >> +Add Hardware >> Specifying Legacy Network Adapter. Legacy NIC is limited to 100mbps but it might be a temporary workaround until you can get your Hyper-V version upgraded to a more current level. 

    Thanks,

    Tim

     Bjarne_Ingelsson 

    • Bjarne_Ingelsson's avatar
      Bjarne_Ingelsson
      Copper Contributor
      Sep 23, 2021
      I can't thank you enough Tim!
      It works perfectly, didn't even know about the legacy adapter(!) But hey, you learn something new every day 🙂
      100Mbit limitation is not an issue, its just a TeamCity agent work horse for creating Server 2022 based docker images.

      I owe you at least a beer!
      /Bjarne