Kickstart

1. The pre-install script is not run in the change root environment.
2. You can access the network in the %pre section; however, name service has not been configured at this point, so only IP addresses work.

Post-Installation Script

The important bits:

1. If you configured the network with static IP information, including a nameserver, you can access the network and resolve IP addresses in the %post section. If you configured the network for DHCP, the /etc/resolv.conf file has not been completed when the installation executes the %post section. You can access the network, but you can not resolve IP addresses. Thus, if you are using DHCP, you must specify IP addresses in the %post section
2. The post-install script is run in a chroot environment; therefore, performing tasks such as copying scripts or RPMs from the installation media do not work.