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3.3. 网络接口控制器
NIC(Network Interface Controller - 网络接口控制器) 通常被称为网卡,它是一个网络或 LAN 适配器,用来把计算机和计算网络进行连接。NIC 运行在网络层和数据连接层来为所在的机器提供网络连接功能。在 Red Hat Virtualization 环境中的主机都最少需要有一个 NIC,但通常情况下主机都会有多个网卡。
一个物理网卡可以有多个虚拟网卡(VNIC)和它相连,而一个虚拟网卡可以看做为一个虚拟机的物理网卡。为了区分虚拟网卡和物理网卡,Red Hat Virtualization Manager 会为每个虚拟网卡分配一个独立的 MAC 地址。

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