I am using Virtualizor on an Ubuntu 18.04 server with KVM virtualization.
I usually install the OS on all the VMs via ISO and I really have no problems during CentOS or Windows installations.
The only problem is while installing Debian or Ubuntu VMs via ISO, I receive an error in the installer saying "The network autoconfiguration was successful. However, no default route was set: the system does not know how to communicate with hosts on the Internet."
Do you have any tips to understand what is the problem?
Thank you very much.