FINALLY you admit forks can be sued for patent infringement, which is all I ever claimed. To provide patent protection for forks would be insane, obviously (to most).
ANY changes, forking and non-forking, can get you sued for patent infringement, but not by Sun, because they've licensed their applicable patents through the CDDL. The license doesn't distinguish between forking and non-forking changes. All it tries to do is keep anyone developing CDDL software from getting sued for patent infringement, because if you introduce code subject to patent litigation to CDDL software you lose the right to do anything with it.
The CDDL purposely (in text and in intent as stated by Sun) keeps patent threats away from CDDL software and developers, yet you keep harping about Sun suing over patents in a fork.
You lose again.