[syslinux] pxelinux search order for configuration file

[Christoph Hanle]

Hi Everyone.
is there a need to have on searching the configuration file the request 
for the "odd ip addresses" ?
Let me explain:
from /doc/pxelinux.txt :
...
Next, it will search for the config file using its own IP address
   in upper case hexadecimal, e.g. 192.0.2.91 -> C000025B
   (you can use the included progam "gethostip" to compute the
   hexadecimal IP address for any host.)

   If that file is not found, it will remove one hex digit and try
   again.  Ultimately, it will try looking for a file named "default"
   (in lower case).

   As an example, if the boot file name is /mybootdir/pxelinux.0, the
   UUID is b8945908-d6a6-41a9-611d-74a6ab80b83d, the Ethernet MAC
   address is 88:99:AA:BB:CC:DD and the IP address 192.0.2.91, it will
   try:

	/mybootdir/pxelinux.cfg/b8945908-d6a6-41a9-611d-74a6ab80b83d
	/mybootdir/pxelinux.cfg/01-88-99-aa-bb-cc-dd
	/mybootdir/pxelinux.cfg/C000025B
	/mybootdir/pxelinux.cfg/C000025
	/mybootdir/pxelinux.cfg/C00002
	/mybootdir/pxelinux.cfg/C0000
	/mybootdir/pxelinux.cfg/C000
	/mybootdir/pxelinux.cfg/C00
	/mybootdir/pxelinux.cfg/C0
	/mybootdir/pxelinux.cfg/C
	/mybootdir/pxelinux.cfg/default
...
Why is there the need, or is there any practical usage to request for:
C000025, C0000, C00 an C ?

I have added in my pxe.c at line 500 a second <last--:> and changed <int 
tries = 4>

This reduces the requests to the tftp server and reduces also the 
entries in the log.

bye
Christoph