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Assuming that you have in-addr.arpa authority for the Class B that the Class C is part of you can delegate it to them with:<br />
<br />
n.n.n.in-addr.arpa. &nbsp; &nbsp; &nbsp; &nbsp; 86400 &nbsp;IN &nbsp;NS &nbsp;ns1.their-dom.tld.<br />
n.n.n.in-addr.arpa. &nbsp; &nbsp; &nbsp; &nbsp; 86400 &nbsp;IN &nbsp;NS &nbsp;ns2.their-dom.tld.<br />
<br />
in the reverse zone for the Class B. This is covered in detail in Chapter 9 of &quot;DNS and BIND&quot;.
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Assuming that you have in-addr.arpa authority for the Class B that the Class C is part of you can delegate it to them with:

n.n.n.in-addr.arpa.         86400  IN  NS  ns1.their-dom.tld.
n.n.n.in-addr.arpa.         86400  IN  NS  ns2.their-dom.tld.

in the reverse zone for the Class B. This is covered in detail in Chapter 9 of "DNS and BIND".

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We have in-addr.arpa authority for a /21 (XXX.XXX.128.XXX - XXX.XXX.135.XXX)<br />
<br />
Currently today I have a separate in-addr.arpa file for each of my class C's. &nbsp;Is there a better way to do this? &nbsp;<br />
<br />

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We have in-addr.arpa authority for a /21 (XXX.XXX.128.XXX - XXX.XXX.135.XXX)

Currently today I have a separate in-addr.arpa file for each of my class C's.  Is there a better way to do this?  



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Thanks for the reply. &nbsp;I really like the slave idea.... That will help with some other issues :) &nbsp;<br />
<br />

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Thanks for the reply.  I really like the slave idea.... That will help with some other issues :)  



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I have a client that we are hosting that is using a full class C. &nbsp;We are wanting to be able to delegate the class C to them for reverse lookups. &nbsp; How do you set that up in bind? &nbsp;I am familiar with standard reverse files, I have never had to setup a reverse delegation to another server though.<br />
<br />
Thanks.
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I have a client that we are hosting that is using a full class C.  We are wanting to be able to delegate the class C to them for reverse lookups.   How do you set that up in bind?  I am familiar with standard reverse files, I have never had to setup a reverse delegation to another server though.

Thanks.

Bind9 reverse Delegation

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.