[syslinux] Problems using pxechn.c32

[Rodrigo Abrantes Antunes]

Hi, I have more than one pxe server in my network and I need to chain from
one to the other. I used to do that with pxechain.com from old versions of
syslinux. With the new version (6.02) I'm trying to achieve this with
pxechn.c32. I copied the files ldlinux.c32, libcom32.c32, libutil.c32,
pxechn.c32, pxelinux.0 and vesamenu.c32 to the tftp's root in both servers
and add this in the menu:

LABEL server2
MENU LABEL server2
kernel pxechn.c32
append ip_of_server2::pxelinux.0

But when I access this entry in menu I got stuck in this screen:

pxechn.c32: Attempting to load 'ip_of_server2::pxelinux.0': loaded.
...Ready to boot:
   Attempting to boot...
Booting...

PXELINUX 6.02 PXE 2013-10-13  Copyright (C) 1994-2013 H. Peter Anvin et al

I have a WDS server too and the chaining process works well from this same
pxe server with this entry in the menu:
LABEL WDSServer
MENU LABEL WDSserver
kernel pxechn.c32
append ip_of_wds_server::\Boot\x64\wdsnbp.com -w

I'm I missing something?
-- 
Rodrigo Abrantes Antunes
Instituto Federal Sul-rio-grandense