}
		vi := xdstest.ExtractListener(model.VirtualInboundListenerName, listeners)
		if vi == nil {
			t.Fatalf("expect virtual inbound listener, found %s", listeners[0].Name)
		}

		byListenerName := map[string]int{}

		for _, fc := range vi.FilterChains {
			byListenerName[fc.Name]++
		}

		for k, v := range byListenerName {
			if k == model.VirtualInboundListenerName && v != 3 {

		// Passthrough chains have fix names based on protocol
		if protocol == istionetworking.ListenerProtocolHTTP {
			return model.VirtualInboundCatchAllHTTPFilterChainName
		}
		return model.VirtualInboundListenerName
	}
	// Everything else derived from bind/port
	return getListenerName(cc.bind, int(cc.port.TargetPort), istionetworking.TransportProtocolTCP)
}

	// to support portNumber listener filter field within those special listeners as well
	if lp.ApplyTo != networking.EnvoyFilter_LISTENER &&
		(listener.Name == model.VirtualInboundListenerName || listener.Name == model.VirtualOutboundListenerName) {
		return true
	}

	// FIXME: Ports on a listener can be 0. the API only takes uint32 for ports

	default:
		return ""
	}
}

func matchListener(listeners []*listener.Listener, input Call) *listener.Listener {
	if input.CallMode == CallModeInbound {
		return xdstest.ExtractListener(model.VirtualInboundListenerName, listeners)
	}
	// First find exact match for the IP/Port, then fallback to wildcard IP/Port
	// There is no wildcard port
	for _, l := range listeners {