Minimum Spring Security version for Kerberos extension to work?

Just as the title asks - what is the minimum Spring Security version that will work with the Kerberos Extension? Will it work with 2.0.8? Or does it need to be 3.0.x and higher?

Also - what version of core Spring is needed? Will it work with 2.0.x?

Thanks!

The latest Kerberos extension will not work with Spring Security 2.0. The latest release works with Spring Security 3.0.x and the latest in master works with Spring Security 3.1.x