[Gllug] DNS CNAME usage.

[Stephen Harker]

Andy Smith wrote:
> On Fri, Mar 17, 2006 at 01:22:41PM +0000, Alain Williams wrote:
>> On Fri, Mar 17, 2006 at 01:10:29PM +0000, Stephen Harker wrote:
>>> Hi All,
>>>
>>> Does anyone have an opinion about CNAME usage and using a CNAME record 
>>> to refer to a canonical name that is not part of the current domain and 
>>> whether there should be problems associated with this?
>>>
>>> For instance.
>>>
>>> www.foo.com	IN	CNAME	foo.bar.com
>> It should work, but it means that the name that appears in the browser location
>> bar is different from what they typed in.
> 
> Huh?  That has nothing to do with DNS.  There is no reason why the
> name on the left of the CNAME can't be what appears in the browser
> window; this is controlled by the webserver, e.g. UseCanonical or
> whatever on Apache.
> 
> AFAIK the only possible "downside" to using CNAMEs in this manner is
> that it intriduces extra lookups and possibly additional nameservers
> whose configurations may be wrong, etc.
> 
> ALso the above example is missing the trailing dots but I assume
> that is a simple typo.

Ah yes. Typo.

S
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