Xen Networking Issue

[thundertech]

I've setup a Xen Server...... with networking issues

The mobo is a Tyan S7012, which has 4 onboard Intel Gigabit NICs. I previously had Windows Server 2008r2 and then Server 2012r2 installed, and both detected all 4 NICs and saw that they were all full gigabit.

Well recently, I wanted to more heavily experiment with virtualization, so I loaded Xen on the old beauty and when consoled into the hypervisor, it shows all 4 Intel Gigabit NICs.

I set up a Windows Server 2008r2 VM and attached 2 physical ports to the VM, but it detects them as 100MB Realtek NICs. I thought that was strange, so I loaded Windows 10 Pro ver.1809, because I thought that it may be some OS issue, since 08r2 is so old, and Win 10 Pro detected the NICs as 100mb Realtek as well.

Obviously this isn't ideal, but I'm not familiar enough with virtualization to know how to really dive into the guts and troubleshoot. Any suggestion, my nerds???