Authentication, console and ingress operator are degraded with the error "Client.Timeout exceeded while awaiting headers"

Issue

• Cluster operators are degraded with errors related to their healthecks:

  $ oc get co |grep -E "NAME|console|authentication"
  NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE   MESSAGE
  authentication                             4.12.13   False       False         False      104s    OAuthServerRouteEndpointAccessibleControllerAvailable: Get "https://oauth-openshift.apps.ocp4-upi.testlab.local/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
  console                                    4.12.13   False       False         False      2m20s   RouteHealthAvailable: failed to GET route (https://console-openshift-console.apps.ocp4-upi.testlab.local): Get "https://console-openshift-console.apps.ocp4-upi.testlab.local": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
  
  
  authentication:
  $ oc get co authentication -o json
  "status": {
        "conditions": [
            {
                "lastTransitionTime": "2023-05-16T16:43:28Z",
                "message": "OAuthServerRouteEndpointAccessibleControllerDegraded: Get \"https://oauth-openshift.apps.ocp4-upi.testlab.local/healthz\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)",
                "reason": "OAuthServerRouteEndpointAccessibleController_SyncError",
                "status": "True",
                "type": "Degraded"
            },
  ...
  
  console:
  $ oc get co console -o json
  ...
            {
                "lastTransitionTime": "2023-05-14T00:49:53Z",
                "message": "RouteHealthDegraded: failed to GET route (https://console-openshift-console.apps.ocp4-upi.testlab.local): Get \"https://console-openshift-console.apps.ocp4-upi.testlab.local\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)",
                "reason": "AsExpected",
                "status": "False",
                "type": "Degraded"
            },
  

• All pods related to the failing operators are up.
• Checking the specific routes using curl from within the operators pods work but they took a lot of time.