# cat /etc/modules | grep tun || echo tun >> /etc/modules
# if it doesn't exist, create debian base image (later: and other base images): https://mop.koeln/blog/creating-a-local-debian-vm-using-cloud-init-and-libvirt/#download-the-image
# for every active VM, if no image exists, run virt-install with the chosen base image and their cloud-init.yml file: https://mop.koeln/blog/creating-a-local-debian-vm-using-cloud-init-and-libvirt/#preparing-a-cloud-init-file
# for every active VM, make sure an IP is assigned and traffic is passed to it