Andrew Sullivan <a...@anvilwalrusden.com> wrote: > > In the other case, it's an indication that the _namespace_ is > different: that if you resolve that name on the Internet without > special enabled software, you aren't getting the service you desired, > regardless of the protocol you happen to be using. In theory, these > kinds of applications actually ought to want a new DNS class; but > since classes are broken (because of CNAMEs/DNAMEs and also because of > the facts of deployed infrastructure), in-band signalling in the > domain name is the preferred alternative.
Classes are the wrong thing for this purpose, because I don't think these are separate namespaces - they are different resolution mechanisms for particular parts of the same hostname namespace. There already examples of similar splits, e.g. mDNS using .local and (to some extent) /etc/hosts (though that covers the whole namespace rather than a particular part). You can't use classses for this purpose because applications that resolve hostnames do not have a way to specify a name's class. But it is perfectly feasible to install a new system resolver module which changes the way part of the namespace works without requiring changes to any of the apps. Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ Dover, Wight, Portland, Plymouth: South 5 or 6, veering southwest 6 to gale 8, becoming cyclonic 4 or 5 later. Moderate or rough, occasionally very rough in Portland and Plymouth. Rain. Good, occasionally poor. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
