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EtherCATEOE移植及上手说明
(3)ARP响应报文: 1)更新ARP缓存表。 2)把阻塞在arp entry缓存队列的IP数据报发送出去。 3)释放pbuf。因为ARP报文到此已经处理完毕。 对于ARP处理数据包来说,有这么两种情况: (1)收到APR应答包:此时说明之前发送的APR请求包得到了回应,那么就根据应答包 ...
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