1. Proposed title of this feature request

• Support self-provisioned load balancers for Gateway API

2. What is the nature and description of the request?

• At this time, the Gateway API implementation required a publicly accessible Load Balancer (with some work in progress for internal LBs tracked from NE-2132)
• However, customers often need a supported scenario where they can provision their own load balancer, while also establishing their own externalTrafficPolicy