How to set one up is extensively documented on the Web, and I kind of assume you already know how to do that if you're fiddling with this. If exists user-class and option user-class = 'gPXE' Then to limit the experiment to a few hosts, set up a group in one of your subnets in the nf, like this: To find out what exactly must be included, and what can be left out, study the docs on how to set up DHCP for PXELinux and for gPXE, the experiment. Option gpxe.reverse-password code 193 = string Option gpxe.reverse-username code 192 = string Option gpxe.bios-drive code 189 = unsigned integer 8 Option gpxe.no-pxedhcp code 176 = unsigned integer 8 Option gpxe.keep-san code 8 = unsigned integer 8 Option gpxe.priority code 1 = signed integer 8 Option gpxe-encap-opts code 175 = encapsulate gpxe Option pxelinux.reboottime code 211 = unsigned integer 32 Option pxelinux.pathprefix code 210 = text So in you nf in the top level, you may need any of these: When the target machine boots via PXE, the DHCP server not only needs to send an IP number, but also information as to where to find the PXE bootstrap, and where to get its configuration information. (Basic installation of a DHCP server is left as an exercise to the reader.)
