@Wayne-Workman
I too thought that was weird.
The firewall that i am using (Fortinet Fortigate 60D, has a number of preset options. one is 150 (tftp server). I did some digging and apperantly 150 is a cisco only option meant for phones.
I have manually entered option 66. but in a odd quirk of the firewall, manual options can only be in hex. I have set option 66 to the hex for the server name and IP. Neither works.

I do have physical server i can test on. I was hoping to avoid it because snapshots allow for much faster iteration in testing. But it looks like i might need to bite the bullet.

I have set up FOG on a Ubuntu 14.04 VM on virtualbox with a bridged connection. This is only a small testing environment, hence the less then production ready hypervisor. Installed Fog based on the information in several of the guides on the internet. The Fog server is up, but i cannot get a computer to PXE boot.

I have added entries on our firewall that handles DHCP.

Option 67 = /undionly.kxpe (i have also used undionly.0, unidonly.kxpe)
Option 150 = fog or IP (i have tried both, neither work)

When i try and PXE boot on the same subnet i get an IP. Then:
TFTP. PXE-M0F: Exiting Intel Boot Agent
On my computer i have manually used tftp to connect to the server (name and IP) and successfully downloaded the file.

Any help i can get would be amazing.