在linux 系统下面，如果换完主板后，原主板记录网卡的/etc/udev/rules.d 文件夹下面一个与net 相关的配置文件不能自动删除原网卡信息造成的，需要进行手动删除，否则就会造成eth0 变成eth3，eth1变成eth4，解决该问题只需修改以下文件即可。
[root@node1 rules.d]# cd /etc/udev/rules.d
[root@node1 rules.d]# ls
40-hplip.rules 70-persistent-net.rules 97-bluetooth-serial.ru
56-hpmud_support.rules 85-pcscd_ccid.rules 98-kexec.rules
60-fprint-autosuspend.rules 90-alsa.rules 99-fuse.rules
60-pcmcia.rules 90-hal.rules 99-lustre.rules
60-raw.rules 90-rdma.rules
70-persistent-cd.rules 91-drm-modeset.rules
[root@node1 rules.d]# cat 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 0x8086:0x10d3 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="48:5b:39:12:51:90",ATTR{type}=="1", KERNEL=="eth*",NAME="eth0" (如果换过主板后，将该条删除或注释)
# PCI device 0x8086:0x10d3 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="48:5b:39:12:4c:57",ATTR{type}=="1", KERNEL=="eth*",NAME="eth1"(如果换过主板后，将该条删除或注释)
# PCI device 0x8086:0x10d3 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="48:5b:39:12:83:48",ATTR{type}=="1", KERNEL=="eth*",NAME="eth2" (如果换过主板后，将该条删除或注释)
# PCI device 0x8086:0x10d3 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="48:5b:39:12:27:60",ATTR{type}=="1", KERNEL=="eth*",NAME="eth3" (如果换过主板后，将该条删除或注释)
按照上述方法删除后，请按如下操作后重启，即可正常按照常规网卡配置IP 的方法进行网卡
的IP 配置，重启后eth2\eth3 也会变成eth0\eth1。
[root@node1 ~]# chkconfig NetworkManager off
[root@node1 ~]# reboot
