Hi,
I finally found on iPXE website[1] a link to detailed examples,
including one[2] to boot pxelinux. It works perfectly with
di-netboot-assistant:
#!ipxe
dhcp
set 210:string tftp://my_server/d-i/n-a/
chain ${210:string}pxelinux.0
For those who did not know (like me :-)), 210 is a standard DHCP option
called "path prefix"[3].
I still believe it would be interesting to add this simple example to
the di-netboot-assistant.
Regards,
Yvan
1. https://ipxe.org/examples#extensive_ipxe_menu_example
2. see menu.ixpe file on https://gist.github.com/robinsmidsrod/2234639
3.
https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml