If you remove the Nework Adapter from a VM and later add one, the Name and Device Name properties get incremented with a numeric suffix. If the removed Adapter had a static IP assigned to it, and if you try to assign the same IP to the newly added adapter, you'll be prompted with a notice/warning.
Same thing happens if you use a VHD with more than one VM - with each VM results a numeric increment in the name and a prompt if you try to assign a static IP which was used by any previous VM that used the VHD.
So, the guest OS is keeping a list of Network Adapters it ever used. Is there any way I can clear this list?