This number is called a VLAN tag.

这个号码称为VLAN标记。

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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 VLANID。

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If the machine (z server) is already VLAN-tagged, then it will look only for the packets having some specific VLAN tag information.

如果机器(z服务器)已经带有VLAN标记，它将仅查找具有特定VLAN标记信息的包。

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If the machine (z server) is already VLAN-tagged, then it will look only for the packets having some specific VLAN tag information.

如果机器(z服务器)已经带有VLAN标记，它将仅查找具有特定VLAN标记信息的包。

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