[dns-operations] does anybody know why yahoo+akamai are doing this?

[Mark K. Pettit]

Hi, folks.

As one of the DNS admins for Yahoo!, I'd like to make sure that we 
aren't actually doing anything wrong.

I've read this thread, and from what I understand and from my 
interpretation of RFC1034, our nameservers (which are fairly stock BTW) 
handing out a referral to the root name servers along with a CNAME that 
points out of our bailiwick is technically correct, though it does seem 
a little weird.

It sounds like we could prevent this behavior by deleting our root.hints 
file, and I'm also fairly sure that we don't actually (need* the 
root.hints file on our authoritative servers because they're totally 
non-recursive.

I suspect we could save a little bit of money in bandwidth costs by not 
handing out the large referral section at the end of the response, so 
that's another benefit.

Am I summing up the situation correctly?

Mark K. Pettit
DNS Administrator, Yahoo! Inc.