主板是之前淘的一块17*17的低功耗小板，最近在测试中安装系统(centos6.5 32位)发现的问题

起初是一切正常,但是重启后突然无法识别网卡,网卡灯一切正常,在ifconfig下也无法正常看到eth0这个网卡,尝试`service network restart`，重启网卡又报下面错误。

service network restart
Shutting down loopback insterface:                             [  OK  ]
Bringing up loopback insterface:                               [  OK  ]
Bringing up interface eth0:  Device eth0 does
 not seem to be present,delaying initialization.               [FAILED]

解决办法：

首先，打开/etc/udev/rules.d/70-persistent-net.rules内容如下面例子所示：

# vi /etc/udev/rules.d/70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:8f:89:97", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:50:bd:17", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

记录下，eth1网卡的mac地址00:0c:29:50:bd:17

接下来，打开/etc/sysconfig/network-scripts/ifcfg-eth0

# vi /etc/sysconfig/network-scripts/ifcfg-eth0

将 DEVICE=”eth0″ 改成 DEVICE=”eth1″ ,
将 HWADDR=”00:0c:29:8f:89:97″ 改成上面的mac地址 HWADDR=”00:0c:29:50:bd:17″

最后，重启网络

# service network restart
或者
# /etc/init.d/network restart

重启后发现ifconfig,我们的网卡从开始的eth0变为eth1,虽然发生了点改变,但是网络的确是恢复了，如果遇到了此问题刚刚看到我的这个帖子，可以尝试下！