How to cname the "<null>" hostname?

[M. Oesterwinter]

Morris Jones (mojo at notrump.whiteoaks.com) wrote:
: 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):

Why is this bad form?

: $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