Centos 6 changes the network card eht1 to eth0

Under SSH:
1. vi /etc/udev/rules.d/70-persistent-net.rules
Change eth0 to eth1, and change eth1 to eth0

2. Rename the network card file
cd /etc/sysconfig/network-scripts
mv ifcfg-eth0 ifcfg-eth2
mv ifcfg-eth1 ifcfg-eth0
mv ifcfg-eth2 ifcfg-eth1

3. Modify the network card Modify ifcfg-eth0 and change eth1 in the file to eth0 (2 places in total).
Modify ifcfg-eth1 and change eth0 to eth1 (2 places in total).

4. Restart
reboot