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RE: [ietf-dkim] DNS wildcarding behavior scenarios

2007-06-11 13:39:28
That is somewhat unfair.

Until DNSSEC there was no need to standardize behavior at all unless you were 
using different software flavors to publish your DNS information. Even the zone 
transfer issue was irrelevant since the semantics of the woldcard were defined 
in the publishing server.

DNSSEC reqired there be a single interpretation of a signed wildcard. The 
advantage of chosing the narrow matching rules was that it was always possible 
for someone to add in extra records if broader semantics were desired but not 
possible to take records out if the match was too loose.


As you point out in your other messages, DNS does provide support for this 
particular use case, even though it might not be what we want.

 

-----Original Message-----
From: ietf-dkim-bounces(_at_)mipassoc(_dot_)org 
[mailto:ietf-dkim-bounces(_at_)mipassoc(_dot_)org] On Behalf Of John Levine
Sent: Saturday, June 09, 2007 7:53 AM
To: ietf-dkim(_at_)mipassoc(_dot_)org
Subject: Re: [ietf-dkim] DNS wildcarding behavior scenarios

[1] For the RFC lawyers, not of any actual operational 
value: There are 
some RFCs that specify some of this behaviour, I believe, in the 
context of zone transfers rather than DNS queries but those 
RFCs really 
just document the behaviour of that one authoritative 
server, and most 
people consider them a mistake worth forgetting as far as being a 
Standard with a capital S is concerned, rather than just 
documentation 
of current practice with that one server.

Unfortunately, there seems to be a critical mass of people in 
the DNS part of the IETF that believe otherwise, that the 
only problem with wildcards is that there are servers that 
don't do exactly what BIND does, and the solution is to fix 
them so they do.

R's,
John

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