Hyperv on one NIC, unclear on IP addressing

Hello,
i'm setting up an hyperv host on a single-nic server and i'm a little unclear on where do i configure the local ip address afterwards:
I have the two NICs, one phys, one virual:
the physical got everything unbound except the virtual network switch (it has static IP).
the virtual LAN does NOT have the virtual switch selected but it took the IP address of the private one.
at this point i'm confused(and i've been reading documentation), is this supposed to be like this?, does the host OS now comunícate through the vNIC only?, how is it working if the virtual NIC does not have the virtual switch selected.
¿shouldnt the vNIC have the VNS bound to it?, is the vNIC the new "local" NIC(AFAIK it is)
On the HVM i have the "allow management os to share..." enabled

When you check the "Allow Management OS to share this network adapter" Checkbox, Hyper-V will actually create a vEthernet object in network connections with whatever name you gave the vSwitch. 
This is the object you assign the IP address, DNS, gateway...etc..etc that you want the host system to use for communication. 
At this point Host traffic is actually routed out via that vSwitch. 
The below article may help. 
http://blogs.technet.com/b/jhoward/archive/2008/06/16/how-does-basic-networking-work-in-hyper-v.aspx
Andy Syrewicze
Come talk more about Hyper-V and the Microsoft Server Stack at
Syrewiczeit.com and the Altaro Hyper-V Hub!
Post are my own and in no way reflect the views of my employer or any other entity in which I produce technical content for.

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