Where I'm wrong? I've installed from a wrong source?
I've just missed a step!
Updated to "2.1-DEVELOPMENT (i386) built on Mon Sep 5 04:07:51 EDT 2011" via Auto Update, then gitsync and now /sbin/route seems working fine.
If i remove the default route for inet6, then "change" it ,route gives "No such process" error, but then the new default is set!