NGINX "proxy_pass" for a "Passthrough" Route does not work

Issue

• Given two Pods that are both exposed by Routes with TLS Passthrough termination, when proxying a request from Pod A to Pod B via a location /proxy/ and proxy_pass directive in NGINX, a call to Pod A "/proxy/hello" doesn't work and returns the following error message:

  Route and path matches, but all pods are down.
  

  The expectations is that this would return "Hello from B".

• We are using the following NGINX proxy_pass configuration, but requesting a Route with "Passthrough" or "Reencrypt" will return an error from the OpenShift Router:

  location /proxy/ {
    proxy_pass https://passthrough-route-mynamespace.lab.example.com/;
  }