在网络交换机上阻止DHCP Discover消息

我试图使用一个HDBN LAN链路/交换机实现一个和声1.07。由于某些原因，不传递DHCP发现消息。我尝试了一些其他设备，它的工作，它似乎不与微芯片网络堆栈工作。我正在搜索这些消息之间可能存在的差异，并修改了堆栈，看看我是否能通过这个消息，但到目前为止还没有运气。我注意到的是，工作单元打开了无碎片标志。我在哪里可以在微芯片堆中设置这个标志，我似乎找不到它。



      以下为原文

    I am trying to use a hARMony 1.07 implementation with an HDBT LAN link/switch.  For some reason the DHCP discover message is not passed through.  I tried it with some other devices, and it worked, it only seems to not work with the Microchip Net Stack.  I am searching through what differences there may be between the messages and have modified the stack to see if I can get the message through, but no luck so far.  What I noted also, is that the working units have the no-fragment flag turned on.  Where can I set this flag in the Microchip stack, I cannot seem to find it.