Remap domain onto subdomain using bind

jwoolard asked:

I have a domain internal.example.com and a second domain foo.bar.com. Each of these domains has their own bind9 instance.

I would like to be able to access records in foo.bar.com using the subdomain foo.internal.example.com. ie I want the lookup xx.foo.internal.example.com to forward to the foo.bar.com DNS server as xx.foo.bar.com.

Is there a way to do this in bind9?

My answer:


Sounds like you might be able to use the (otherwise rarely seen) DNAME record.

For instance, in the internal.example.com zone:

foo     IN      DNAME   foo.bar.com.

A query for xx.foo.internal.example.com would then return a synthesized CNAME pointing to xx.foo.bar.com.


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