dnsmasq incompatibility?

[xerces8]

Hi!

I am trying to netboot a laptop that has no builtin PXE support.
I tried gPXE 1.0.1 and iPXE 1.0.0+ (9361).

After getting IP config over DHCP, gPXE prints:
No filename or root path specified
No more network devices

iPXE prints a similar message:
Nothing to boot , http://ipxe.org/2d03e13b

Apparently filename and root-path are empty (checked as described on the error page).

The cause might be some incompatibility between iPXE and dnsmasq as described here: http://etherboot.org/wiki/dnsmasq#a_pote..._and_a_fix

Other PCs with builtin PXE support work fine on the same LAN.

Any idea how to proceed troubleshooting? Use a debug build?