Debian 7 preseed for automated install - network preseed issue

[summersab]

So, I've followed a number of tips and tricks across the internet, but I haven't found anything that has worked. I'm trying to launch iPXE, set up TCP/IP, netboot the kernel with a hosted preseed.cfg provided as an argument, and run a totally automated, zero-touch install. However, no matter what I do, I cannot get the installer to bypass the networking config and DHCP probe with the options I put in the preseed file.

A lot of posts that I've found state that because of the way Debian's installer works, some network parameters must be passed in manually from iPXE to the kernel instead of providing them in the preseed file. However, nothing I've found will work. Does anyone have a conclusive solution for how to bypass in the preseed and carry on?

Thanks!