Do you know if it's possible in KVM to create separate virtual subnetwork managed by KVM (like: adding VMs to that network, reading their IPs) which is accessib

Do you know if it's possible in KVM to create separate virtual subnetwork managed by KVM (like: adding VMs to that network, reading their IPs) which is accessible from parent network? I got home network and wanted KVM to control which VM gets which IP, but I couldn't make them accessible from outside - without static IPs on VM side. When I use virtual bridge, KVM cannot set the IPs, but at least they are accessible from my home network.