[syslinux] pxelinux 2.04+ hangs after loading kernel

[H. Peter Anvin]

Josef Siemes wrote:
> Hi again,
> 
> "Josef Siemes" <jsiemes at web.de> schrieb am 11.08.03 21:54:36:
> 
>>I just tried to change MTU to 1500, but it seems that AIX doesn't
>>like that without taking the device down, since the tftp server doesn't seem
>>to serve the client any more.
> 
> 
> I've tried a different machine with gigabit ethernet and MTU 1500, this works.
> This is a separate network, in the other one the MTU is set to 1492 because
> of a bridge that doesn't like an MTU of 1500.
> 
> Regards,
> 
> Josef
> 

OK, that's almost certainly the problem, then.  What's happening is that
 with the larger blksize you're getting fragmentation, and then your PXE
stack doesn't handle fragment reassembly correctly.

Perhaps blksize should be a configure file option.  I need to figure out
how to best do that.  In the meantime you can disable blksize on the
TFTP server.

	-hpa