The differences in documentation between KVM docs and virtualbox docs make it difficult to find what I'm looking for
My goal is to do something like https://resources.infosecinstitute.com/topic/setting-pentest-lab-pfsense-virtualbox/ where all guests have IPs assigned by the pfSense guest, which also acts like a firewall between them and can itself be accessed by the host network. In this way I can practice having a host blocking access between my attacking machine and the target.
The libvirt docs don't really go into it, I think https://wiki.libvirt.org/page/VirtualNetworking
What exactly am I missing? I'm having a hard time trying to figure out what I don't know that I don't know, so I can't really tell
related: Bridging of Internal Network in KVM