The Net::TcpDumpLog module serializes each packet, so that we can read each packet by using the packet ID.

TcpDumpLog 模块会将每一个数据包序列化，这样我们就能够通过数据包 ID 读取每一个数据包。

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To leverage VLAN tagging the operating system adds a VLAN ID tag to each TCP/IP packet.

为了利用 VLAN 标签技术，操作系统会给每一个 TCP/IP 数据包添加一个 VLAN ID。

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The weakness in Internet Protocol is that the source host itself fills in the IP source host id, and there is no provision in TCP/IP to discover the true origin of a packet.

IP协议中最脆弱的策略就是让源主机自己填写源IP地址，并且在TCP／IP协议中也没有提供一种机制来验证源IP地址的真实性。

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