Oh, I'm sorry. I remove (and purged) the package and used apt-cacher instead. Now everything just works.
You can close this bug if the latest package has the right info in the man page. -- man apt-proxy-import has wrong options in example https://launchpad.net/bugs/66798 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs