switch filter.Type {
		case k8s.HTTPRouteFilterRequestHeaderModifier:
			h := createHeadersFilter(filter.RequestHeaderModifier)
			if h == nil {
				continue
			}
			if vs.Headers == nil {
				vs.Headers = &istio.Headers{}
			}
			vs.Headers.Request = h
		case k8s.HTTPRouteFilterResponseHeaderModifier:
			h := createHeadersFilter(filter.ResponseHeaderModifier)
			if h == nil {
				continue
			}