ipxe -> pxelinux.0: "No more network devices"

[jmari]

I've iPXE (latest) that loads this script:

#!ipxe
chain pxelinux.0

pxelinu.0 come from syslinux 4.04 (latest) and all runs ok... but when I try to load p.e. a kernel and initrd, after loading files screen shows:

Loading url://kernel
Loading url://initrd
No more network devices

After all, kernel boot with normality.

I tested with older versions of syslinux (<4) and all runs ok. Maybe for the old COM32R module format in syslinux 3.x?

Thanks