Vmware對虛擬機複製之後100%的網卡名稱會變化，一般變化爲eth2，原因爲複製的虛擬機會重新生成mac地址。
如下：
[root@CentOS64-222-Oracle12~]# ifconfig -a
修改辦法如下：
vi/etc/udev/rules.d/70-persistent-net.rules
把NAME="eth2" 修改爲NAME="eth0"，並將多餘的記錄刪掉。
重啓即可
舉例如下：
以前的文件內容爲
# 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 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add",DRIVERS=="?*", ATTR{address}=="00:0c:29:21:3e:50",ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add",DRIVERS=="?*", ATTR{address}=="00:0c:29:79:b9:9c",ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add",DRIVERS=="?*", ATTR{address}=="00:0c:29:55:60:17",ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
修改後的文件內容爲
# 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 0x8086:0x100f (e1000)
SUBSYSTEM=="net",ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:55:60:17",ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"