[NTLUG:Discuss] DNS setup for .us TLD ?delegated domain?

[Egome]

Issue 1:

I am trying  to register a domain under    lewisville.tx.us

I first need to setup my DNS server to be ready to handle DNS
requests.  While I can and have setup second level domains (something.com)
I am having difficulty configuring DNS for a third level domain (a
locality).  Once I register  mydomain.lewsiville.tx.us  it is my understanding
that I will then have hosts under that domain...such as
NS.mydomain.lewisville.tx.us   and CNAME records like  www.mydomain.lewisville.tx.us

I've tried setting up my DNS to handle such requests but NSLOOKUP always fails when I query my own DNS record for an entry that I have made... such as    ns.mydomain.lewisville.tx.us  

Am I missing something config wise??  Because this is a third level domain, must all queries go back to ns.gen.tx.us FIRST and T H E N  come to me??  Should I just submit the application and see what happens??  

Issue 2:
I understand that it is technically invalid to have one server serve as both primary and secondary DNS server.  In the case of having to satisfy the requirements to have two DNS servers, is it possible to configure your primary DNS server with a secondary IP address and have the DNS service respond for both?  How would that be done?


Thanks
-Richard
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