ip
The IP address that this forwarding rule serves. When a client sends traffic to this IP address, the forwarding rule directs the traffic to the target that you specify in the forwarding rule. The loadBalancingScheme and the forwarding rule's target determine the type of IP address that you can use. For detailed information, refer to IP address specifications. An address can be specified either by a literal IP address or a reference to an existing Address resource. If you don't specify a reserved IP address, an ephemeral IP address is assigned. The value must be set to 0.0.0.0 when the target is a targetGrpcProxy that has validateForProxyless field set to true. For Private Service Connect forwarding rules that forward traffic to Google APIs, IP address must be provided.