Linux网卡异常：解决Device eth0 does not seem to be present 

一：故障现象

二：解决方法

(1)打开70-persistent-net.rules,记录下eth1网卡的mac地址:

vi /etc/udev/rules.d/70-persistent-net.rules

# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:b9:22:fa", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

记录下，eth1网卡的mac地址00:50:56:b9:22:fa

（2).打开ifcfg-eth0,更改DEVICE名和MAC地址：

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"

(3).重启网络

 service network restart