[syslinux] alternate tftp server

[jason bishop]

i just discovered the alternate ftp server syntax for pxelinux in the  
changelog today.  this interests me as I would like to use pxelinux on  
a linux box to give a config file which tells pxelinux to fetch the  
windows 2003 bootloader program (actually startrom.n12 from windows  
2003) from the windows box.

IE:
label windows
   kernel 192.168.1.2::startrom.0

since i can watch the fetching of the pxelinux config file on the  
linux box (with a named pipe) i know exactly when the windows install  
happens and therefore i can twiddle the pxelinux config to localboot 0  
after the windows install starts.  good so far.

now for my question:
i know the windows install works fine via pxelinux when the next- 
server dhcp option lists windows box and my pxelinux config file lists  
kernel startrom.0.

i assume windows startrom is looking at next-server dhcp option to  
know where to tftp ntldr.  is this true? if so, will the  
192.168.1.2::startrom.0 syntax work?  i went looking through the code  
for the alternate tftp server syntax and i don't see anywhere where  
the bootp.sip is re-written with the alternate server ip.  would this  
have to happen for the windows startrom bootloader to know where to  
tftp ntldr from?

thanks everybody

jason