Isolating a local bind server

[Dan Long]

I am running Bind 9.2.3 as my domain name server for my local network.  I am connected to the Internet through a DHCP DSL connection to my network.  I have a domain name that I have hosted by a hosting service on the Internet.  I am trying to create an intranet at home on my local network and want to have my dns server only for my local network.  However, when I start Bind, it communicates with name servers on the Internet.  I want to stop this.  I want no communication between my local Bind and anybody on the Internet.  Is this possible?
I have tried several things myself with limited luck.  I tried:
    named.conf
  acl internal { 172.0.0.1; 192.168.1.0/24; };

  acl outsidedns { 4.2.2.4; 4.2.2.5; 4.2.2.6; };

  acl bogus-net1 { 0.0.0.0/8; 1.0.0.0/8; 2.0.0.0/8; 192.0.2.0/24; 224.0.0.0/3; 10.0.0.0/8; 172.16.0.0/16; };

  acl bogus-net2 { 0.0.0.0/3; 16.0.0.0/3; 64.0.0.0/3; 96.0.0.0/3; 128.0.0.0/3; 160.0.0.0/3; };

  acl bogus-net3 { 208.0.0.0/4; 200.0.0.0/5; 196.0.0.0/6; 194.0.0.0/7; 193.0.0.0/8; };

  include "/etc/rndc.key";

  controls {

  inet * allow { localhost; } keys { rndckey; };

  };

  options {

  directory "/var/named";

  listen-on { 172.0.0.1; 192.168.1.10; };

  allow-query { internal; };

  allow-transfer { none; };

  allow-recursion { internal; };

  notify no;

  blackhole { bogus-net1; bogus-net2; bogus-net3; };

  };

where the blackhole command is supposed to stop communication with anybody in the acl list.

I tried replacing the blackhole with:

  acl bogus-net { !192.168.1.0/24; any; };

This was even less successful.

My hint zone is:

  zone "." in {

      type hint;

      file "named.ca";

  };

So I tried commenting out all entries in the file "named.ca".  This did not work either.

No matter what I try, there is some communication going on with outside DNS servers.

Can anybody tell me if this is possible and if so, how to do it.

Thank you,

Dan Long