Backward-incompatible handling of the "unspecified" authentication context class with the IdP v3 default configuration

[Peter Schober]

* Kaspar Brand <kaspar.brand at switch.ch> [2015-07-27 16:13]:
> One of the upgraded IdPs in our federation is running into this problem
> with SpringerLink (http://link.springer.com/athens-shibboleth-login),
> and while there is no doubt that the RequestedAuthnContext they include
> doesn't make any real sense, it's also kind of a backward
> incompatibility with the IdP v2

I'm all for putting some pressure on the SP to get them to fix their
authn requests, rather than forcing myriads of IDPs to work around
that issue.
I'd suggest taking this to REFEDS (or the FOG group there).
-peter