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Date:   Sun, 22 Nov 2020 12:01:45 +0100
From:   Pablo Neira Ayuso <>
To:     Alexei Starovoitov <>
Cc:     Lukas Wunner <>,
        Daniel Borkmann <>,
        Laura García Liébana <>,
        John Fastabend <>,
        Jozsef Kadlecsik <>,
        Florian Westphal <>,
        Netfilter Development Mailing list 
        Network Development <>,
        Alexei Starovoitov <>,
        Eric Dumazet <>,
        Thomas Graf <>, David Miller <>
Subject: Re: [PATCH nf-next v3 3/3] netfilter: Introduce egress hook

Hi Alexei,

On Sat, Nov 21, 2020 at 07:24:24PM -0800, Alexei Starovoitov wrote:
> On Sat, Nov 21, 2020 at 10:59 AM Pablo Neira Ayuso <> wrote:
> >
> > We're lately discussing more and more usecases in the NFWS meetings
> > where the egress can get really useful.
> We also discussed in the meeting XYZ that this hook is completely pointless.
> Got the hint?

No need to use irony.

OK, so at this point it's basically a bunch of BPF core developers
that is pushing back on these egress support series.

The BPF project is moving on and making progress. Why don't you just
keep convincing more users to adopt your solution? You can just
provide incentives for them to adopt your software, make more
benchmarks, more documentation and so on. That's all perfectly fine
and you are making a great job on that field.

But why you do not just let us move ahead?

If you, the BPF team and your users, do not want to use Netfilter,
that's perfectly fine. Why don't you let users choose what subsystem
of choice that they like for packet filtering?

I already made my own mistakes in the past when I pushed back for BPF
work, that was wrong. It's time to make peace and take this to an end.

Thank you.

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