NET_SHAPER_ID_UNSPEC
new_node = node->handle.id == NET_SHAPER_ID_UNSPEC;
static_assert(NET_SHAPER_ID_UNSPEC == NET_SHAPER_MAX_HANDLE_ID + 1);
handle->id == NET_SHAPER_ID_UNSPEC) {
id = NET_SHAPER_ID_UNSPEC;