The test "[sig-network-edge][OCPFeatureGate:GatewayAPIController][Feature:Router][apigroup:gateway.networking.k8s.io] Ensure HTTPRoute object is created [Suite:openshift/conformance/parallel]" is consistently failing with OCP 4.20. The specific Route is not reachable.

Link: https://prow.ci.openshift.org/view/gs/test-platform-results/logs/periodic-ci-openshift-hypershift-release-4.20-periodics-e2e-aws-conformance-cilium/1968781211660718080

Test Failure: 
{  fail [github.com/openshift/origin/test/extended/router/gatewayapicontroller.go:649]: Timed out waiting for successful HTTP GET response from "test-hostname.gw-custom.a06a29f901d26cf90bbc.ci.hypershift.devcluster.openshift.com": context deadline exceeded
Unexpected error:
    <context.deadlineExceededError>: 
    context deadline exceeded
    
        {}
occurred}

Actual issue: The Route is unreachable:
I0918 22:24:50.567589 77280 gatewayapicontroller.go:640] HTTP GET request to "test-hostname.gw-custom.a06a29f901d26cf90bbc.ci.hypershift.devcluster.openshift.com" failed: Get "http://test-hostname.gw-custom.a06a29f901d26cf90bbc.ci.hypershift.devcluster.openshift.com": EOF, retrying...

    4.20

    Always

    1. Run the job above in CI which executes the conformance test suite
   

    Test failing

    Test passing

    This started to fail with 4.20 as the test was updated with additional checks. It might be true that the same test would be failing already with OCP 4.19 and older if the test was complete.
   This only affects configurations with Cilium.

The test was earlier failing on AKS (without Cilium): https://issues.redhat.com/browse/OCPBUGS-56688 It was fixed there.