Authenticating to sharepoint with kerberos from a java HttpClient

Question

I have a linux\java6 client that will authenticate to sharepoint2010 with NTLM and then send HTTP REST web services using Apache Commons HttpClient.

I can do this with NTLM , but I want to use the same REST API to access sharepoint 2010 that uses kerberos auth.

Any examples how to authenticate and send REST over HTTP with a kerberos sharepoint? (preferably using HttpClient)

p.s. I dont have access to sharepoint code, but i do have access to sharepoint admin configurations.