pm := GatewayPortMap{}
	for r, s := range serversByRouteName {
		portNumber, _, _ := ParseGatewayRDSRouteName(r)
		if _, f := pm[portNumber]; !f {
			pm[portNumber] = sets.New[int]()
		}
		for _, se := range s {
			if se.Port == nil {
				continue
			}
			pm[portNumber].Insert(int(se.Port.Number))
		}
	}
	return pm

					},
				},
				Spec: k8s.GatewaySpec{
					GatewayClassName: k8s.ObjectName(features.GatewayAPIDefaultGatewayClass),
					Listeners: []k8s.Listener{{
						Name:     "http",
						Port:     k8s.PortNumber(80),
						Protocol: k8s.HTTPProtocolType,
					}},
				},
			},
			objects:                  defaultObjects,
			discoveryNamespaceFilter: discoveryNamespacesFilter,
		},
		{

				Context: networking.EnvoyFilter_SIDECAR_OUTBOUND,
				ObjectTypes: &networking.EnvoyFilter_EnvoyConfigObjectMatch_Listener{
					Listener: &networking.EnvoyFilter_ListenerMatch{
						PortNumber: 81,
					},
				},
			},
			Patch: &networking.EnvoyFilter_Patch{
				Operation: networking.EnvoyFilter_Patch_REMOVE,
			},
		},
		{
			ApplyTo: networking.EnvoyFilter_LISTENER,

	// FIXME: Ports on a listener can be 0. the API only takes uint32 for ports
	// We should either make that field in API as a wrapper type or switch to int
	if lMatch.PortNumber != 0 {
		sockAddr := listener.Address.GetSocketAddress()
		if sockAddr == nil || sockAddr.GetPortValue() != lMatch.PortNumber {
			return false
		}
	}
	return true
}

// We assume that the parent listener has already been matched

	sidecarScope := proxy.SidecarScope
	for _, ingressListener := range sidecarScope.Sidecar.Ingress {
		// LDS would have setup the inbound clusters
		// as inbound|portNumber|portName|Hostname[or]SidecarScopeID
		listenPort := &model.Port{
			Port:     int(ingressListener.Port.Number),
			Protocol: protocol.Parse(ingressListener.Port.Protocol),
			Name:     ingressListener.Port.Name,
		}

func NewConflictingGateways(r *resource.Instance, gateway string, selector string, portnumber string, hosts string) diag.Message {
	return diag.NewMessage(
		ConflictingGateways,
		r,
		gateway,
		selector,
		portnumber,
		hosts,
	)
}

// NewImageAutoWithoutInjectionWarning returns a new diag.Message based on ImageAutoWithoutInjectionWarning.

    template: "Conflict with gateways %s (workload selector %s, port %s, hosts %v)."
    args:
      - name: gateway
        type: string
      - name: selector
        type: string
      - name: portnumber
        type: string
      - name: hosts
        type: string

  - name: "ImageAutoWithoutInjectionWarning"
    code: IST0146
    level: Warning