如果接收方主机ip地址与要求的IP地址匹配，就生成一个包括发送方所要求的硬件地址的ARP回应帧，并直接发送给源主机。
If the receiving hosts IP address matches the requested IP address, an ARP reply is formulated with the requested hardware address and sent directly to the source host.
不匹配的状态导致的消极结果是在发送RST_STREAM流之后它们的“关闭”是受限制的，因为可能在关闭之后帧才被接收。
The negative consequences of a mismatch in states are limited to the "closed" state after sending RST_STREAM, where frames might be received for some time after closing.
如果计算出的值与初始crc值不匹配或硬件地址不是所需要的，帧就被丢弃。
If the value doesn't match the original CRC value or the hardware address is not of interest, the frame is discarded.
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