The RFC or the reason why you can not create CNAME record for the "root record"

[Kevin Darcy]

list3 at wwwcrazy.com wrote:

>Why can you not create a CNAME record for the "root record".
>I'm not sure if I'm using the correct terminology.
>But basically I want to know why this command does not work:
>update add example.com. 10 IN CNAME www.mysecondexample.com.
>
>I know it must be in an RFC somewhere but I can not see it anywhere.
>
RFC 1034, Section 3.6.2:  If a CNAME RR is present at a node, no other 
data should be present

Since you have SOA and NS records at the zone apex, that name (aka "node") cannot own a CNAME record.

							- Kevin