Re: Kernel DHCP unpredictable/fails (PXE boot), userspace DHCP works just fine

> On 18 Mar 2023, at 21:34, Attila Nagy <nagy.attila@gmail.com> wrote:
> 
> 
> 
> Daniel Braniss <danny@cs.huji.ac.il <mailto:danny@cs.huji.ac.il>> ezt írta (időpont: 2023. márc. 18., Szo, 10:56):
>> take look at src/stand/libsa/bootp.c, there is a compile option that allows many
>> more options to be transferred via dhcp … 
> Without the kernel BOOTP/DHCP, this (doing the DHCP from userspace, from /etc/rc.d/dhclient) is somewhat late for rc.initdiskless to pick them up, no?
> I mean how would you use that to have the same support for classes in rc.initdiskless?
>  
>> 
>> BTW, where possible I’m moving  to uefi, since pxeboot is failing with file to large …
> Does that make any changes here? rc.initdiskless is called very early in the boot process and kern.bootp_cookie won't exist (there wouldn't be a hostname either I think, which I also rely on with the in-kernel DHCP).

i made the changes to bootp ages ago, but as far as I remember you can get as kenv variables
much stuff, including hostname, which rc.initdiskless can use. I’m using a slightly modified rc.initdiskless btw.
it’s a bit late now, but i’ll try and refresh my memory tomorrow.
danny