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From: Harald Welte <laforge@gnumonks.org>
Date: Mon, 19 Feb 2018 16:23:21 +0100

> Also, as long as legacy ip_tables/x_tables is still in the kernel, you
> can still run your old userspace against that old implementation in the
> kernel.

But without offloading, and the various other benefits which I have
tried to clearly explain to both you and Florian.