According to the GKE Enterprise Knative docs

When your GKE Enterprise cluster is created, the Istio ingress controller creates a Google Cloud Network Load Balancer with a publicly available IP address.

However I do not see any Load Balancer created in any namespace.

> kubectl get -A svc
NAMESPACE         NAME                         TYPE           CLUSTER-IP       EXTERNAL-IP                                            PORT(S)                                     AGE
ai-knative        hello                        ExternalName   <none>           knative-local-gateway.istio-system.svc.cluster.local   80/TCP                                      42m
ai-knative        hello-00001-tah              ClusterIP      34.118.235.136   <none>                                                 80/TCP,443/TCP                              45m
ai-knative        hello-00001-tah-private      ClusterIP      34.118.237.41    <none>                                                 80/TCP,443/TCP,9090/TCP,9091/TCP,8022/TCP   45m
default           hello2                       ExternalName   <none>           knative-local-gateway.istio-system.svc.cluster.local   80/TCP                                      30m
default           hello2-00001-zeq             ClusterIP      34.118.236.206   <none>                                                 80/TCP,443/TCP                              33m
default           hello2-00001-zeq-private     ClusterIP      34.118.236.251   <none>                                                 80/TCP,443/TCP,9090/TCP,9091/TCP,8022/TCP   33m
default           kubernetes                   ClusterIP      34.118.224.1     <none>                                                 443/TCP                                     93m
gke-gmp-system    alertmanager                 ClusterIP      None             <none>                                                 9093/TCP                                    91m
gke-gmp-system    gmp-operator                 ClusterIP      34.118.237.92    <none>                                                 8443/TCP,443/TCP                            91m
istio-system      knative-local-gateway        ClusterIP      34.118.239.241   <none>                                                 80/TCP                                      65m
knative-serving   activator-service            ClusterIP      34.118.235.8     <none>                                                 9090/TCP,8008/TCP,80/TCP,81/TCP,443/TCP     65m
knative-serving   autoscaler                   ClusterIP      34.118.230.158   <none>                                                 9090/TCP,8008/TCP,8080/TCP                  65m
knative-serving   autoscaler-bucket-00-of-01   ClusterIP      34.118.232.176   <none>                                                 8080/TCP                                    62m
knative-serving   controller                   ClusterIP      34.118.227.206   <none>                                                 9090/TCP,8008/TCP                           65m
knative-serving   metrics-collector            ClusterIP      34.118.227.30    <none>                                                 55678/TCP                                   65m
knative-serving   webhook                      ClusterIP      34.118.235.168   <none>                                                 9090/TCP,8008/TCP,443/TCP                   65m
kube-system       antrea                       ClusterIP      34.118.234.127   <none>                                                 443/TCP                                     91m
kube-system       default-http-backend         NodePort       34.118.239.110   <none>                                                 80:32319/TCP                                91m
kube-system       kube-dns                     ClusterIP      34.118.224.10    <none>                                                 53/UDP,53/TCP                               92m
kube-system       metrics-server               ClusterIP      34.118.238.69    <none>                                                 443/TCP                                     91m

If I need to manually create this what would the spec look like?

Are any other services missing?