booting ipxe from pxelinux

[robinsmidsrod]

What happens if you put your "ipxe command, e.g. shell" on an APPEND line inside your pxelinux config file? Does that work?

If you just start ipxe.krn without any command, does it allow you to press Ctrl-B to get to the iPXE shell? If so, your issue is specifically getting the scriptlet variable set properly. If you had it working with syslinux 4.xx then I suggest you carefully examine the changelogs between version 4 and 6 and see if they mention anything about incompatibilities with iPXE or loading bzImage kernel images.