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

Chris Thompson cet1 at cam.ac.uk
Thu Jun 25 20:23:50 UTC 2009

On Jun 25 2009, I wrote:

>>Whether there are any current resolvers that don't follow CNAMES when
>>resolving name server names to A/AAAA records seems to be an open question.
>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).

Ummm - I can see that could be misinterpreted. I meant in the context of
looking up address records (or mail domains) - not for the targets of NS
records, for which it is "well-known" that CNAMEs don't work at all. (But
then, we are a BIND shop ...)

Chris Thompson               University of Cambridge Computing Service,
Email: cet1 at ucs.cam.ac.uk    New Museums Site, Cambridge CB2 3QH,
Phone: +44 1223 334715       United Kingdom.

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