AT_DEVICE 2.0.3 rtthread 4.0.2链接不了多台设备

typedef struct _client_info{
    char netdev_name[64];
    struct netdev *netdev;
    char cid[64];
    char sub_topic[128];
    char pub_topic[128];
}client_info;
static client_info esp32_demo_topics = {0};
static client_info sim7600ce_demo_topics = {0};
static int demo_mqtt(int argc, char *argv[])
{
    rt_thread_t tid_mqtt;
    client_info *info;
    struct netdev *netdev = RT_NULL;
    if (argc != 2)
    {
        rt_kprintf("demo_mqtt [default_netdev_name]   --expected default network interface device.\n");
        return -1;
    }
    rt_kprintf("input parameters are: %s %s \n", argv[0], argv[1]);
    netdev = netdev_get_by_name(argv[1]);
    if (netdev == RT_NULL)
    {
        rt_kprintf("not find network interface device name(%s).\n", argv[1]);
        return -1;
    }
    /* 设置线程名称 */
    rt_snprintf(tid_name, sizeof(tid_name), "mqtt_%s", argv[1]);
    /* 设置默认网卡对象 */
    netdev_set_default(netdev);
    rt_kprintf("demo_mqtt set default network interface device(%s) success.\n", argv[1]);
    /* 根据输入的网卡名称 设置MQTT topics相关信息*/
    if (0 == strcmp(argv[1],"sim7600ce"))
    {
        info = &esp32_demo_topics;
    }
    else if (0 == strcmp(argv[1],"esp32"))
    {
        info = &sim7600ce_demo_topics;
    }
    rt_snprintf(info->netdev_name, sizeof(info->netdev_name), "%s", argv[1]);
    info->netdev = netdev;
    rt_snprintf(info->cid, sizeof(info->cid), "rtthread_%s", argv[1]);
    rt_snprintf(info->sub_topic, sizeof(info->sub_topic), "server/%s", info->cid);
    rt_snprintf(info->pub_topic, sizeof(info->pub_topic), "client/%s", info->cid);
    tid_mqtt = rt_thread_create(tid_name, kawaii_mqtt_demo, (void *)info, 2048, 17, 10);
    if (tid_mqtt == RT_NULL) {
        return -RT_ERROR;
    }
    /* only for test */
    if (RT_FALSE == is_salof_init)
    {
        mqtt_log_init();
        is_salof_init = RT_TRUE;
    }
    rt_thread_startup(tid_mqtt);
    return RT_EOK;
}
MSH_CMD_EXPORT(demo_mqtt, Kawaii MQTT client test program);