[Serusers] SER with 3rd party billing

[Dipole Moment]

Hi all,

I'm planning to use SER with a 3rd party billing platform that
understands Cisco VSA as described here
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/vapp_dev/vsaig3.pdf.

I've been looking into RADIUS implementation in SER and looks like it
cannot be used out of the box, there's no support for authorization
and native RADIUS authentication, only digest.  Before I go on and add
necessary code to auth_radius module, I'd like to know if anyone has
implemented it and would like to share/sell his code.

Thanks.