[syslinux] syslinux PXE boot version upgrade, network no longer working

[Ady Ady]

> Right, by 2014 I meant 6.03. I didn’t notice in the docs this was a known issue. If keeppxe is a bug with 6.03, that’s likely my issue. Do I drop back to 6.02 or X? Which version?
 
 
I would suggest trying Debian's "experimental" binaries (which include 
potentially-relevant patches for keeppxe), including all its "bios" lib*.c32 
files (beware not to mix with the efi files with same file names) and its 
linux.c32 (so as to replace the KERNEL directive, as follows):

LABEL Ghost
COM32 linux.c32
APPEND memdisk keeppxe floppy rw initrd=bootimages/ghost.ima

Even if you are not using Debian, the [experimental] binaries can be downloaded 
and used anyway.

Please replace _all_ files with the corresponding version (including pxelinux.0 
+ ldlinux.c32 + menu.c32 + linux.c32 + lib*.c32, all from the "bios" platform); 
do not mix versions.

Prior to 6.03, the last version to correctly support keeppxe was version(s) 
4.xx.