kern/41180: pxeboot_ia32.bin broken

[perry%piermont.com@localhost]

>Number:         41180
>Category:       kern
>Synopsis:       pxeboot_ia32.bin broken
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 10 04:10:00 +0000 2009
>Originator:     Perry E. Metzger
>Release:        NetBSD 4.99.28
>Organization:
Perry E. Metzger                perry%piermont.com@localhost
>Environment:
        
        
System: NetBSD snark.cb.piermont.com 4.99.28 NetBSD 4.99.28 (ZWEI) #0: Sun Aug 
12 13:52:43 EDT 2007 
perry%snark.piermont.com@localhost:/usr/src/sys/arch/amd64/compile/ZWEI amd64
Architecture: x86_64
Machine: amd64
>Description:

1) At one point, pxe followed by tftp of i386 and amd64 kernels worked fine.
2) a -current pxeboot c.a. Aug 12  2007 fails slightly -- without
   next-server being set on the dhcp server, it fails to try to tftp
   from the same server that dhcp'ed, which used to work correctly
   (see the i386/pxeboot man page.) This version of pxeboot properly
   boots a -current as of today amd64 install kernel.
3) a -current pxeboot c.a. today just utterly fails to tftp down a
   kernel correctly. I get weird errors.

Based on informal conversatoin with Matt Green I have suspicions about
nfs booting as well, but I haven't tested that.

I'm guessing, especially based on the fact that pxeboot has grown over
9k in the 2007 to 2009 interval, that someone has been working on the
code without conducting real tests. This needs to be fixed.

>How-To-Repeat:
        
>Fix:
        

>Unformatted: