[dns-operations] Why are cnames called "canonical" names?

Fred Morris m3047 at m3047.net
Fri Apr 10 16:28:47 UTC 2015

You may be theoretically correct, but...

On Fri, 10 Apr 2015, Mark Andrews wrote:
> [...]
> The LHS is the alias.
> The RHS is the canonical name.
> Think of CNAME as "the canonical name of this alias is ..."

Let's see how this works in practice:

I have a server www.example.com. That's it's real (canonical) name. Cool.

I'll give it an address. A nice, shiny A record.

But gee, people keep going to example.com instead of www.example.com. I'd
better create a CNAME which says "if you're visiting example.com, you
really should be going to www.example.com".

But I can't do that.


Fred Morris

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