I have KVM with VIRTIO network interface. It runs under Windows Server 2012 R2 so I installed RedHat network virtio drivers. It runs properly but after system reboot internet connection is lost. Network card has yellow sign and it described as Unidentified Network. When I manually disable and enable network adapter it works again. Cant understand why this happen and what I can do to fix it. Of course I can make a script to be executed at startup that disable and enable interface, but I need more proper solution.
Found similar problem here with solution, but cant view it :'D