Kickstart over network on RHEL7

I have a working kickstart configuration for RHEL5 and RHEL6. I have tried using both the boot.iso and dvd.iso. When I get to the installation prompt, I typically hit then I can enter a string similar to: "linux ks=http:///pub/.cfg ksdevice=eth0 ip= netmask= gateway= noipv6".

I do know that the naming convention of the ksdevice has changed, and I have tried omitting that value, still to no avail.

What I would expect: KS to configure the network device, download KS file and start auto-deployment of unattended installation

What happens: Returns me to the same screen and puts in the default boot from CDROM parameters (e.g. initrd....)

What am I missing? Is there updated documentation from KS with RHEL7?

Thank you,
Steve