[syslinux] gpxelinux and dhcp

[Pierre]

Hello,

I'm playing with gpxelinux, it's works but ...
In my dhcpd.conf I have the traditional:

option space gpxelinux;
option gpxelinux-encap-opts code 175 = encapsulate gpxelinux;
option gpxelinux.bus-id code 177 = string;

subnet 192.168.0.0 netmask 255.255.255.0 {
   host essai {
     hardware ethernet 00:11:22:33:44:55;
     fixed-address 192.168.0.62;
     if not exist gpxelinux.bus-id {
       filename "gpxelinux.0";
     } else {
       filename "http://192.168.0.61/memtest.smp";
     }
   }
}

gpwelinux info appears, and it redirect, not to memtest.smp
but to http://192.168.0.61/pxelinux.0/default   !

if I change http by tftp, it redirect to 
tftp://192.168.0.61/pxelinux.cfg/default

Thank you for help !
PiR