---
    apiVersion: metallb.io/v1beta1
    kind: L2Advertisement
    metadata:
      name: l2-ingress
      namespace: metallb-system
    spec:
      ipAddressPools:
        - ingress-pool
    nodeSelectors:
        - matchLabels:
            node-role.kubernetes.io/runai-system: "true"

    ---
    apiVersion: metallb.io/v1beta1
    kind: IPAddressPool
    metadata:
      name: ingress-pool
      namespace: metallb-system
    spec:
      addresses:
        -   192.168.0.250-192.168.0.251 # Example of two ip address - 
    autoAssign: false
    serviceAllocation:
        priority: 50
        namespaces:
        - ingress-nginx
        - knative-serving