Looks like the link below may provide what I need. I will try this out.

http://www.dartmouth.edu/~pkilab/pages/EAP-TLSwFreeRadius.html

From: Verma Anurag-VNF673
Sent: Friday, January 27, 2012 5:50 PM
To: 'freeradius-devel@lists.freeradius.org'
Subject: Not verifying username in EAP-TLS

Hi,

I want to bypass user verification when using EAP-TLS – i.e.  freeRADIUS should only verify  the certificate validity without verifying that the user name, contained in  CN part of the Subject field in the certificate, is present in the user database. Is it possible to do this?  If so, what should the configuration look like?

Thanks,

Anurag