Bug Description

Suppose there is a client, a vs and a service.
vs has port 8080 but routes to service on port 8081.

When the client defines a sidecar with egress listener depending on vs:8080, the service with port 8081 is not included in the sidecar scope, resulting in client proxy can not get the service configs. If client depends on vs:8081, it works. But I don't think it makes sense since vs does not have port 8081.

I think if client specify vs:8080, istio should be smart enough to pull in service on port 8081.
I believe the code to change is here, if it makes sense, happy to submit a fix.

Version

istio 1.12

Additional Information

No response