[root@localhost ping]# ifup eth0 eth0 设备的 MAC 地址与预想的不符,忽略。 在网上搜了一下,才知道是因为我将虚拟硬盘移入到另外一台机子,这台机子的MAC地址显然和之前机子的MAC地址不一样,所以,到此这个问题就很好解决了 首先查看当前所在系统的MAC地址: [ping@localhost network-scripts]$ ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 08:00:27:49:8a:e2 brd ff:ff:ff:ff:ff:ff inet 192.168.1.223/24 brd 192.168.1.255 scope global eth0 inet6 fe80::a00:27ff:fe49:8ae2/64 scope link valid_lft forever preferred_lft forever 看到了吗,红颜色的内容就是你当前系统的MAC地址,所以将/etc/sysconfig/network-scripts/ifcfg-eth0中的HWADDR字段内容修改为08:00:27:49:8a:e2 好了,在重启网络就OK了,祝你成功! 转贴: http://blog.youkuaiyun.com/snlying/archive/2011/02/16/6188035.aspx