gerald_clark wrote:There are 3 possible causes for your problem.
1. Your ifcfg files are incorrect.
2. Your local nameserver is broken.
3. You dhcp server is broken.
Start by reading the FAQ: http://wiki.centos.org/FAQ/CentOS6
I checked this out and I'm still roaming around trying to figure out how to keep the nameserver permanantly changed. I'm wondering if there is a way to configure network manager since it's generated by it.