# 使用友好的 MAC 编号

默认情况下，主机跟交换机启动后分配的 MAC 地址是随机的，这在某些情况下不方便查找问题。

可以使用 `--mac` 选项，这样主机跟交换机分配到的 MAC 地址跟他们的 ID 是一致的，容易通过 MAC 地址较快找到对应的节点。


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