pxeGRUB DHCP question?

[Kyle McDonald]

Hi all,

I'm new to the list, and I've searched the web some, but most hits 
didn't answer my questions.

My main question is should pxegrub always send out it's own DHCP query 
to the DHCP server? or are there some modes of operation where it just 
reuses the info the PXE boot ROM got from it's DHCP query? If so what is 
it that triggers this change in behavior?



My situation:

I've been using the stock (Sun tweaked I believe) pxegrub from 
OpenSolaris (GRUB 0.95) for a while now. I have the DHCP server setup to 
supply option 150 to specify different grub menu config files for 
different clients, how ever grub doesn't receive that info and drops me 
to the grub command line.

If I recall correctly, I seem to remember that there were 2 DHCP query 
sessions in the past, one for the PXE boot ROM, and a second for GRUB. 
Starting last week, I've only been seeing one query (from PXE) in the 
DHCP server debug output, and snoops of the network traffic. This change 
coincides with losing the menu and seeing the command line.

I've tried typing 'dhcp' at the GRUB command line, and I don't see a new 
DHCP query on the DHCP server, so I'm pretty sure that's not doing 
anything. Is there more I can do to debug this from the GRUB command 
line? Can I force GRUB to do another query to the DHCP server and see if 
that reply would contain the proper option 150 - knowing that would help 
me figure out where to look next.

  -Kyle