Windows 8.1 with Hyper-V external switch – 802.1x will not work

I have 8.1 with installed and virtual machines connected via Switch – External. wired authentication is not working in host or in guest machine (computer is not responding to switch requests).
If I will change switch mode to Internal/Private it will start working.

with a Hyper-V with 802.1x will not work!!!

From https://social.technet.microsoft.com/forums/windows/en-US/341cbe70-3fa7-4991-a7e4-4f1af63df4d0/windows-8-hyperv-8021x-eapol-request-missing i read that “official” statement from is that 802.1x with Hyper-V on .1 is not working by design. #Fail .