This video will show you how to permanently fix network connectivity issues with RedHat. I stumbled across this while try to fix my own internet connection issues. I am using a VM with a bridged network adapter, but I'm sure this will work if you are using a NAT connection, you will just have to make sure you set the right IP and netmask.
![](https://i.ytimg.com/vi/A_e06O3OWhE/maxresdefault.jpg)