networking - No network connection on Host or Guest simultaneously with Client Hyper-V + Windows 8

I create a virtual switch from the Hyper-V manager, then I set it as the Network adapter in the VM's settings.

In subsequent attempts, this happens:

• 
  

  The VM gets access to the internet, but the host OS doesn't

  
  

  OR:

  
  


• 
  

  The host OS has internet access, but the VM doesn't.

  
  

That is, the host and guest don't get internet access simultaneously.

What can I do?

I did all the steps as indicated in: Here.