For secondary DNS i`m using:
If i learned right, the secondary server need be in another IP.
The secondary as mirror i think will work as load balance for your internal network, frst requisition will ask ns1.server.com, second will ask ns2.server.com, etc... Not sure if is it.
For the second DNS (puck.nether.net), i just set to allow zone transfer.
On the primary DNS you need add an A record point for your domain to your public IP ns1.yourdomain.com
Last edited by Wisdown; 9th September 2012 at 03:15.