I am using vra 7.0.1
I can install Rhel 6.x using kickstart file. Guest agent was successfully installed. Linux hostname and IP address was changed by guest agent. There is no problem on Rhel 6.x.
We made same proccess for Rhel 7.0, 7.1. Guest agent was successfully installed, hostname was changed, but IP address was not changed by guest agent.
Do you have any idea or experience for RHEL 7.x ?