[Gllug] DNS CNAME usage.

David Damerell damerell at chiark.greenend.org.uk
Mon Mar 20 13:47:52 UTC 2006


On Monday, 20 Mar 2006, Steve Nelson wrote:
>On 3/20/06, David Damerell <damerell at chiark.greenend.org.uk> wrote:
>>RFC 1034 section 3.6.2.
>Yeah, I've read that before, and didn't think it amounted to an
>explicit prohibition a CNAME pointing to a CNAME.
>"Domain names in RRs which point at another name should always point at
>the primary name and not the alias.

That prohibits it right there. Note that 1034 does not use the formal
MUST/SHOULD distinction;

foo IN CNAME bar
foo IN A x.x.x.x

is prohibited by a "should" earlier in section 3.6.2.

-- 
David Damerell <damerell at chiark.greenend.org.uk> flcl?
Today is Gorgonzoladay, March - a weekend.
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