CNAME only zone?

[Barry Margolin]

In article <mailman.510.1323563868.68562.bind-users at lists.isc.org>,
 Ken Peng <shorttag at gmail.com> wrote:

> 2011/12/11 Barry Margolin <barmar at alum.mit.edu>:
> 
> >
> > If CloudFlare is similar to Akamai's solution, recursive servers never
> > see the CNAME record. Â Instead, when the auth server receives the query
> > for the A record of the apex, it performs its own query for the CNAME,
> > and returns the result of this.
> >
> 
> That hears interesting.
> But if the remote auth server for the CNAME has multi-views, and
> return different IPs based on the different clients, then this
> solution maybe not work as expected.

True.  Akamai generally only uses it for domains that point to their 
hosting/caching infrastructure.  The apex points to a server that sends 
an HTTP redirect to the www hostname, which is a real CNAME to Akamai's 
domain, so then their GLSB logic is invoked.

-- 
Barry Margolin
Arlington, MA