Installing CentOS6 network configuration problems

To install CentOS6, we decided to upgrade CentOS from 5 to 6. However, after CentOS6.2 is installed, it is found that eth0 does not automatically obtain the IP address through DHCP as usual. After opening the/etc/sysconfig/network-scripts/ifcfg-eth0, I found that the configuration information is not the same as usual... installing CentOS 6 network configuration problems today I decided to upgrade CentOS from 5 to 6 at home. However, after CentOS 6.2 is installed, it is found that eth0 does not automatically obtain the IP address through DHCP as usual. Open/etc/sysconfig/network-scripts/ifcfg-eth0 and find that the configuration information is not the same as usual, the configuration information is as follows. 1 DEVICE = "eth0" 2 HWADDR = "00: 0C: 29: 8E: 13: 7E" 3 NM_CONTROLLED = "yes" 4 ONBOOT = "no" www.2cto.com "NM_CONTROLLED ", this unfamiliar configuration item thus enters my eye, from Google results http://www.convirture.com/wiki/index.php? Title = RedHat_6_Networking learned that the Network was no longer manually configured during the installation process starting from RedHat6 and switched to Network Manager http://www.redhat.com/magazine/003jan05/features/networkmanager /. (No wonder I didn't see any network setting steps during installation !) However, after I change the configuration information to the following and run the "/etc/init. d/network restart" command, everything will return to normal. 1 DEVICE = "eth0" 2 BOOTPROTO = "dhcp" 3 HWADDR = "00: 0C: 29: 8E: 13: 7E "4 NM_CONTROLLED =" no "5 ONBOOT =" yes "by Neron. L