[KVM] Guest network connection irreparably dies if the host is disconnected

Every time I disconnect my host from the Internet, all of my virtual machines lose network access permanently until I reboot the host. This happens on Linux (tested various distros) and Windows guests. Is there a workaround for this? As a last resort I could live with having to reboot the guests, but rebooting the host is overkill. Any kind of forced reboot gives me PTSD flashbacks of my Windows days.

I'm running KVM/QEMU/virt-manager on MX Linux 21.3