The UTP Ethernet variants support an additional autoconfiguration protocol that allows two Ethernet systems to negotiate which speed to use, in full or half duplex mode.
这种衍生的UTP电缆支持一种“自动配置协议”，允许两个以太网系统自行决定采用全双工抑或半双工操作。
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The current model for stateless address autoconfiguration USES the MAC address of the device (in other words, an Ethernet card or mobile phone) to formulate the prefix of the 128-bit IPv6 address.