jnamed zone transfer fails

[Hontvari J. <hon...@so...>]

I am trying to configure a slave jnamed server. I can do an AXFR request 
using DNSJAVA dig to the master server which is also a jnamed instance. 
The slave jnamed instance cannot start.

This condition throws the exception in Zone.fromXFR

    if (!xfrin.isAXFR())
        throw new IllegalArgumentException("zones can only be " +
                           "created from AXFRs");

As I understand the javadoc of isAXFR() it is related to the answer 
message. However following the short code with and without debugger and 
I cannot see anywhere that a message was sent at all at this point.

Btw. I have been successfully using jnamed as a locale dnsbl server for 
a year. Now I plan to setup a master slave configuration for our 
*unused* domains. I know you don't recommend it for production uses, and 
this is not really production. DNS servers are required for the 
registration of the domains, and I don't want to install two bind 
instances. It would open a new attack vector for a small benefit.