Re: [Enum] draft-bellis-enum-send-n-00

[bmanning at vacation.karoshi.com]

On Fri, Apr 04, 2008 at 11:37:01AM +0100, Clive D.W. Feather wrote:
> > Well, let's not go down the wildcard SOA  
> > and NS ratholes.
> [...]
> > Although I am no fan of wildcard DNS labels, it makes no sense to say  
> > "wildcards are OK for this RRtype but not that RRtype".
> 
> Why not? What are the semantics of a wildcard SOA?
> 
> As someone else said, this is a usage guide not a technical prohibition.
> 

	semantics are easy. interpretation of results are
	mixed.

	wildcard use in SOA and NS rr's is not specifed.
	given the variety of DNS implementations in the 
	field, interpretation of wildcards for these RR tyeps
	will vary wildly, without predictable behaviour.
	(this from emperical evidence)

	if you are looking at a -usage- guide, then it is 
	wise to stick wiht proven, well defined technologies
	like NAPTR.  assuming of course that you want 
	something that can be deployed/used in your lifetime.
	
	if the enum wg wants to tackle a crisp technical 
	specification on how wildcards should behave for
	SOA and NS rr's - feel free to add that to the charter.

	when the DNS wg looked at clarification of wildcard
	behaviour, it specifically excluded these two RR types.

--bill (who tried this out)
	
_______________________________________________
enum mailing list
enum at ietf.org
https://www.ietf.org/mailman/listinfo/enum