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...主机生成一个包含目的地址为网关路由器 IP 地址的 ARP 查询报文,将该 ARP 查询报文放入一个具有广播目的地址(FF:FF:FF:FF:FF:FF)的以太网帧中...
这里FF之间的零宽空格是编辑时附带的特殊编码,还是广播地址必须有这个字符呢?