Cisco 1760出现如下提示，该怎么办

一台客户1760路由器，启动时总是有如下提示：伴随的现象是：F0/0口不通了，协议和状态都是UP的
A random default MAC address of 0000.0c83.d770 has been chosen.  Ensure that this address is unique, or specify MAC addresses for commands (such as 'novell routing') that allow the use of this address as a default.


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可能mac地址有冲突