当Linux检测到IP地址重复时，会显示如下消息

以下的消息会在 dmesg 和 /var/log/messages 中出现。

[   75.816550] e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[   75.817003] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   76.800009] eth0: duplicate address detected!