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Date:   Thu, 16 Jan 2020 20:59:39 +0100
From:   Pablo Neira Ayuso <>
To:     Martin Willi <>
Cc:     Florian Westphal <>,,, David Ahern <>
Subject: Re: [PATCH netfilter/iptables] Add new slavedev match extension

Hi Marti,

On Fri, Jan 10, 2020 at 05:34:12PM +0100, Martin Willi wrote:
> Pablo,
> > This patchset introduces a new Netfilter match extension to match
> > input interfaces that are associated to a layer 3 master device. The
> > first patch adds the new match to the kernel, the other provides an
> > extension to userspace iptables to make use of the new match.
> These patches have been marked as superseded in patchworks, likely due
> to Florian's nftables version that has been merged.
> While I very much appreciate the addition of VRF interface matching to
> nftables, some users still depend on plain iptables for filtering. So I
> guess there is some value in these patches for those users to extend
> their filtering with VRF support.

A single xt_slavedev module only for this is too much overhead, if you
find an existing extension (via revision infrastructure) where you can
make this fit in, I would consider this.


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