The Netware 6.0 SLP DA doesn´t register the OES2(Linux)Services.

First i have to open Ports on OES2 that he can see the DA. Now with the
slptool i get some informations back. But no Services from the OES2 Server
are registered on the DA...

With slptool findsrvs service:bindery.novell he shows only the Netware
Servers and not the OES2.

What is going wrong?