Putting the "codingstyle" control aside, often it's because things look
too hackish. Take ipt_ROUTE as an example. It won't get included, since
the "proper" way to do it would be using MARK and iproute2. But many users
don't get that [no criticism here], because ipt_ROUTE is so much easier.
(Probably because iproute2 and other netlink-using tools, like tc, lack