I hope this isn't necro-bumping too hard, again, for this thread...
My hardware is:
Acer AC100
Onboard NIC: Intel 82579LM (8086:1502 - 0000:00:19.0) [vmnic1]
PCIe NIC: Broadcom BCM5721 (14e4:1659 - 0000:01:00.0) [vmnic0]
I've tried using 5.1.0, 5.1.0u1, and 5.5.0 all on fresh vanilla...