[dns-wg] Fwd: [enum-wg] Tier-2 provisioning: NS vs CNAME/DNAME

On 15 Jul 2004, at 11:07, Jim Reid wrote:

> Another problem -- which won't apply to someone clueful like you -- is
> that the introduction of CNAMEs increases the likelihood of looping or
> very long CNAME chains. Or dangling CNAMEs that point at nothing. Even
> without these administrative errors, the introduction of CNAMEs will
> complicate ENUM lookups and could mean they take too long. This would
> be somewhat annoying when someone picks up their ENUM-aware phone,
> dials a number and then waits for an eternity while the resolver
> chases down umpteen CNAME chains before making a phone ring. IMO it's
> best not to give people access to that much rope to hang themselves.

OTOH, there's a balance to be struck between allowing people to be
responsible for their own mistakes and engaging in the 
diminishing-returns
game of protecting them from everything.

If registrars or T2 registries can't do their job, how long will they 
stay
in business ?

Best regards,

Niall O'Reilly
UCD Computing Services