[root@serverc ~]# find /sys/devices/ -type d -name net | xargs ls
'/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/virtio1/net':
eth0

'/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/virtio2/net':
eth1

/sys/devices/virtual/net:
lo
[root@serverc ~]# lspci | grep -i eth
01:00.0 Ethernet controller: Red Hat, Inc. Virtio network device (rev 01)
02:00.0 Ethernet controller: Red Hat, Inc. Virtio network device (rev 01)
[root@serverc ~]#