[libvirt-users] Speed of physical NIC?

Hello everyone, I’m trying to use libvirt to calculate some statistics about the current guest utilizations, but I do have some problems in regards of networking. I can do sampling of network speed by using the interfaceStats-API over a predefined period of time. But to calculate the percentage of the used bandwidth I need to know to what kind of network the interface is connected to – 100 Mbit/s, 1000 Mbit/s, …? Is there any way to get this information through Libvirt or is there any addition planned for that? Thank you very much in advance, Best Regards, Marcel