We have what seems like a common thread across new HP hardware. I have 4 examples of this to my knowledge where we have ordered machines with 10G NICs and they do not work.
So far we have either fallen back to 1G to make some progress (https://phabricator.wikimedia.org/T193196#4267196) or 1G is legitimately fine. For labnet100 at least we need 10G to function, in the case of labvirt1019 and 1020 1G would actually be fine as that's been the labvirt standard to this point. But the mystery remains.