Harmony调用TCPIP_DHCP_Enable（）后不应用DHCP分配的DNS值

——和谐V1.09——默认情况下，我的设备最初启动TCPIP，并通过静态IP设置（DHCP客户端服务禁用）将网络连接起来（TCPIPPSTACKBRIGNETUP）。然后从非易失性存储中加载用户配置的网络设置并应用这些。但是，从上述状态（DHCP禁用，即静态IP设置），如果DHCP客户端稍后通过TCPIpH.DHCPYEnable（）启用，则DHCP指定的DNS服务器值不被*应用！这个问题的决定点可以在.HealthV1O09FraseTCPISrcDHCP C中，在函数ydHCPSETeNeLeasee（）中，在1767行，其中检查BISDNSSEVALUAL标志。注意！！此标志仅在整个堆栈中的一个实例中被触摸和声明**…当配置的地址服务被检查时（参见第3049—3064行）。此外，调用yLoopNeWorkStudio（）的唯一公共API函数是TCPIPpStAcxNETUP（）。当简单地启用DHCP客户端模式时，这里出现了一些错误。请告知。如果这是预期的行为，那么请指定什么是正确的过程，使DHCP客户端从初始化网络的状态已经没有地址服务激活。



      以下为原文

    -- HARMony v1.09 --
By default, my device initially starts TCPIP and brings networking up (TCPIP_STACK_BringNetUp) with static IP settings (DHCP client service disabled). It then loads user-configured network settings from nonvolatile storage and applies those.

However, from the above state (DHCP disabled, i.e. static IP settings), if DHCP client is later enabled via TCPIP_DHCP_Enable(), the DHCP-assigned DNS server values are *NOT* applied!

The deciding point of this issue can be found in ..Harmonyv1_09frameworktcpipsrcdhcp.c, in function _DHCPSetNewLease(), at ~ line 1767, where the bIsDNSServerAuto flag is checked. NOTE!! ... this flag is **only touched and asserted in _one_ instance in the entire stack** ... which is in _LoadNetworkConfig(), when the configured address service is checked (see lines 3049-3064).

Furthermore, the only public API function which calls _LoadNetworkConfig() is TCPIP_STACK_NetUp().

I see nowhere in the documentation specifying that networking must be brought down/up, or reinitialized, when simply enabling DHCP client mode.

There appears to be something wrong here.  Please advise.  

If this is said to be intended behavior, then please specify what is the correct procedure to enable DHCP client from a state of initialized networking already with no address service active.

Thank you