Any plans to support "integrated authentication"?

[Quitch]

I have recently been trying to use Gentoo. Lacking broadband at home I decided to try and make it my OS at work (currently working on it during lunch breaks). The problem is that we have a Microsoft ISA Proxy in place. This proxy uses something called "integrated authentication" which appears to be blocking most 3rd party software.

I got lucky recently in that Mozilla Firebird now supports this authentication, at least allowing me to drop IE. I was wondering if there are any plans for Gentoo to add support for this to their setup?