8.4.

apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: bridge-network 

  annotations:
    k8s.v1.cni.cncf.io/resourceName: bridge.network.kubevirt.io/br1 

spec:
  config: |
    {
      "cniVersion": "0.3.1",
      "name": "bridge-network", 

      "type": "bridge", 

      "bridge": "br1", 

      "macspoofchk": false, 

      "vlan": 100, 

      "preserveDefaultVlan": false 

    }

$ oc create -f network-attachment-definition.yaml 

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: example-vm
spec:
  template:
    spec:
      domain:
        devices:
          interfaces:
            - bridge: {}
              name: bridge-net 

# ...
      networks:
        - name: bridge-net 

          multus:
            networkName: a-bridge-network 

$ oc apply -f example-vm.yaml