stio should use this service as the gateway for the<br>network, when configuring cross-network traffic. Istio will configure<br>pods residing outside of the network to access the Gateway service<br>via `spec.externalIPs`, `status.loadBalancer.ingress[].ip`, or in the case<br>of a NodePort service, the Node's address. The label is configured when<br>installing the gateway (e.g. east-west gateway) and should match either<br>the default network for the control plane (as specified by the Istio System<br>Namespa