Binding multiple physical adapter to a single virtual miniport in ndis mux intermediate driver

I need to develop a 1:n ndis mux intermediate driver. I have the N:1 driver sample from DDK. So in notify object I have created only one virtual miniport. And in driver bind the first adapter to it as primary binding. And allocated first adapter MAC address for the virtual miniport.
Now how can I bind the second adapter to the same virtual miniport and get the packets of it to the virtual miniport.

Is is my imagination, or has this exact question been asked a lot lately?