Dynamic Host DNS Registration

[Jim Logan]

Hello everyone,

I am new to this list and to bind, so please forgive any naive 
questions.  I've tried searching for an answer, but I can't find one.  
Maybe I'm searching on the wrong keywords?

I have successfully set up a DNS server behind my firewall/NAT router 
that resolves my local names to local IP addresses.  I am now trying to 
add the ability to have Windows XP machines register their IP addresses 
and local host names with the DNS server.  I've been taking things one 
step at a time while I learn about BIND, so I'm leaving my DNS server 
completely insecure for the moment.

Here's the problem.  The Windows XP event log is showing a failure, but 
I can't see anything that indicates a failure or denial on the DNS side, 
even though the zone files never change.  I do see messages in response 
to the registration in the query log, and I do see debugging trace 
messages in named.run, but I'm seeing nothing obvious that says the 
update is failing.  The closest thing I see in the debugging messages is:

    req: leaving (JimLogan.localhost, rcode 0)
    make_rr(localhost, 13a000, bfffeb34, 476, 1) 45 zone 2 ttl 86400

(BTW, I haven't gotten around to changing the name of my "localhost" 
zone to a different name, like "local".  I hope that's not a factor.  I 
inherited that zone name from the Mac OS X configuration and never 
changed it.)

I've tried setting the following within the localhost and reverse-lookup 
zones without effect:

    * allow-update { all; };
    * allow-update { mynet; }; (where mynet is defined at the top of the
      file as "acl mynet { 192.168.123.0/24; 127.0.0.1; };")
    * not mentioning allow-update at all

Does anyone have any suggestions?

Thanks,
-Jim