[dns-operations] Adding CNAME for the root domain issue

[Paul Vixie]

John Levine wrote:
>> The semantics of "CNAME" are, "the owner name is actually this other
>> name".  Therefore, to have any other data at the CNAME would be
>> absurd.
>
> OK.  How about this?
>
> --- one zone ---
> $ORIGIN foo.example
> foo.example. CNAME bar.example.
> www A 1.2.3.4
>
> --- another zone ---
> $ORIGIN bar.example
> bar.example. SOA ns.provider.example. hostmaster.bar.example. 1776070401 900 604800 7200
>               NS ns.provider.example.
>               NS ns2.provider.example.
> www A 5.6.7.8
>
> That is, the CNAME at the apex is all by itself, pointing at another
> apex with the right SOA and NS, no glue needed.  Is that valid?

no.

   Why
> or why not?

the SOA and an NS RRset are not optional at the apex.

-- 
P Vixie