How to cname the "<null>" hostname?

[Morris Jones]

Here's the thing.

domain.com and www.domain.com have the same IP address.

But supposedly it's bad form to put them in the zone file this
way (though obviously it works):

$ORIGIN domain.com.
		A	4.3.2.1
www		A	4.3.2.1

One of them is supposed to be a CNAME of the other.

So how do you specify that the CNAME of domain.com is www.domain.com,
or vice versa?

Mojo
-- 
Morris Jones         <*>
Campbell, CA
mojo at whiteoaks.com
http://www.whiteoaks.com