[dns-operations] NS records pointing to names with CNAME records

[Paul Vixie]

> Date: 25 Jun 2009 20:48:50 +0100
> From: Chris Thompson <cet1 at cam.ac.uk>
> ...
> In a message to some of our college COs today, I referred to CNAME chains
> as "(slightly) deprecated". It's time out of mind since anyone reported
> them not working (if reasonably short).

they always work, whether short or not.  here's a live example.

;; QUESTION SECTION:
;www.microsoft.com.             IN      A

;; ANSWER SECTION:
www.microsoft.com.      3600    IN      CNAME   toggle.www.ms.akadns.net.
toggle.www.ms.akadns.net. 300   IN      CNAME   g.www.ms.akadns.net.
g.www.ms.akadns.net.    300     IN      CNAME   lb1.www.ms.akadns.net.
lb1.www.ms.akadns.net.  300     IN      A       65.55.21.250