[ovirt-users] Understanding Cluster Networking between Hosts

Hello everyone. I am looking to setup a ovrit cluster. I am struggling with the network side of things. I have watched some videos about Ovirt and kvm/libvirt. I understand the bridge and NAT networks. The part I am struggling with is the host network. Here is my setup. I have two bare metal servers, that have one physical nic with a public IP. There is no private physical network on these boxes virtual or physical. I want to host an application on a single vm for each customer. the customer access the application via username.domain.com. So the question is. I have to have a layer 7 load balancer to route the url to an IP. This load balancer is haproxy on a separate bare metal box. (it could be in a vm on one of the hosts) So the load balancer has to be on the same network as all the vms. I just don't know to setup the networking between the LB on one box and the vm's on potentially may bare metal hosts. It really feels like I am missing something really obvious. All the videos I have watched all assume the host networking is already in place. Any help or resources I can read/watch would really be helpful. Brad