uid, gid := uint32(0), uint32(0)
		if attrs.UID != nil {
			uid = *attrs.UID
		}
		if attrs.GID != nil {
			gid = *attrs.GID
		}
		inDev, outDev := "", ""
		if attrs.InDev != nil {
			ii, err := net.InterfaceByIndex(int(*attrs.InDev))
			if err == nil {
				inDev = ii.Name
			}
		}
		if attrs.OutDev != nil {
			ii, err := net.InterfaceByIndex(int(*attrs.OutDev))
			if err == nil {
				outDev = ii.Name
			}

	}
	return out
}

// splitEqual splits key=value string into key,value. if no = is found
// the whole string is the key and value is empty.
func splitEqual(str string) (string, string) {
	idx := strings.Index(str, "=")
	var k string
	var v string
	if idx >= 0 {
		k = str[:idx]
		v = str[idx+1:]
	} else {
		k = str
	}
	return k, v
}

  // "spec.containers{name}" (where "name" refers to the name of the container that triggered
  // the event) or if no container name is specified "spec.containers[2]" (container with
  // index 2 in this pod). This syntax is chosen only to have some well-defined way of
  // referencing a part of an object.
  // TODO: this design is not final and this field is subject to change in the future.
  // +optional

	result.ReferencedNamespaceKeys = nsReferences
	result.ResourceReferences = ctx.resourceReferences
	return result
}

// convertReferencePolicies extracts all ReferencePolicy into an easily accessibly index.
func convertReferencePolicies(r GatewayResources) AllowedReferences {
	res := map[Reference]map[Reference]*Grants{}
	type namespacedGrant struct {
		Namespace string
		Grant     *k8sbeta.ReferenceGrantSpec
	}

// TODO: given how tightly tied listener.FilterChains, opts.filterChainOpts, and mutable.FilterChains
// are to each other we should encapsulate them some way to ensure they remain consistent (mainly that
// in each an index refers to the same chain).
func (ml *MutableGatewayListener) build(builder *ListenerBuilder, opts gatewayListenerOpts) error {
	if len(opts.filterChainOpts) == 0 {

	retry.UntilSuccessOrFail(t, func() error {
		for i, svc := range svcs {
			endpoints := GetEndpointsForPort(svc, sd.XdsUpdater.(*xdsfake.Updater).Delegate.(*model.EndpointIndexUpdater).Index, port)
			if endpoints == nil {
				endpoints = []*model.IstioEndpoint{} // To simplify tests a bit
			}
			sortEndpoints(endpoints)
			sortEndpoints(expe[i])