Envoyfilter on istiogateway conflict with default multi-clusterdefault NETWORK envoyfilter

1

stio 1.4.6

Bug description
envoyfilter on istiogateway conflict with default multi-cluster default NETWORK envoyfilter
Step 1: I installed istio multi-cluster successfully



Step 2: I found a default NETWORK filter installed in remote cluster by default 
apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  creationTimestamp: "2020-06-02T11:31:29Z"
  generation: 1
  labels:
    app: gateways
    chart: gateways
    heritage: Tiller
    release: istio
  name: istio-multicluster-ingressgateway
  namespace: istio-system
  resourceVersion: "2703610"
  selfLink: /apis/networking.istio.io/v1alpha3/namespaces/istio-system/envoyfilters/istio-multicluster-ingressgateway
  uid: f9fd8377-face-4249-b4c8-fc6a972fa141
spec:
  filters:
  - filterConfig:
      cluster_pattern: \.global$
      cluster_replacement: .svc.cluster.local
    filterName: envoy.filters.network.tcp_cluster_rewrite
    filterType: NETWORK
    insertPosition:
      index: AFTER
      relativeTo: envoy.filters.network.sni_cluster
    listenerMatch:
      listenerType: GATEWAY
      portNumber: 15443
  workloadLabels:
    app: istio-ingressgateway
    istio: ingressgateway

Step 3: I installed my own envoyfilter

kind: EnvoyFilter
metadata:
  name: istio-multicluster-ingressgateway-tenant-id
  namespace: istio-system
spec:
  workloadLabels:
    app: istio-ingressgateway
    istio: ingressgateway
  configPatches:
  - applyTo: HTTP_FILTER
    match:
      context: GATEWAY
      listener:
        filterChain:
          filter:
            name: envoy.http_connection_manager
            subFilter:
              name: envoy.router
        portNumber: 80
    patch:
      operation: INSERT_BEFORE
      value:
        config:
          inlineCode: |
            function envoy_on_request(request_handle)
              request_handle:logInfo("*************** enter envoy_on_request istio-multicluster-ingressgateway-tenant-id")  
              local path = headers:get(":path")
              local method = headers:get(":method")
              local host = headers:get(":authority")
              request_handle:logInfo(path)
              request_handle:logInfo(method)
              request_handle:logInfo(host)
              request_handle:headers():replace("tenant_id","A_Great_Tenant")
            end
        name: envoy.lua

Expect result:
Both envoyfilter can take effective.

Actual result:
If I access from internet, My own envoyfilter works.
If I access from another cluster, ONLY istio default envoyfilter istio-multicluster-ingressgateway takes effective, my own envoyfilter not works. The http request does not go into my enovyfilter at all.

2

Question: Is there anyway to make both envoyfilter works? Thanks.