netdev - Re: [PATCH AUTOSEL 5.10 3/9] sit: allow encapsulated IPv6 traffic to be delivered locally

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Message-ID: <CALrw=nFwuo=OWzDimGK0MyqLs4LBu9_WkKxXLpw+e2oTJAD8Lw@mail.gmail.com>
Date:   Mon, 24 Jan 2022 15:55:14 +0000
From:   Ignat Korchagin <ignat@...udflare.com>
To:     Jakub Kicinski <kuba@...nel.org>, Sasha Levin <sashal@...nel.org>,
        stable@...r.kernel.org, netdev <netdev@...r.kernel.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Amir Razmjou <arazmjou@...udflare.com>,
        David Ahern <dsahern@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: Re: [PATCH AUTOSEL 5.10 3/9] sit: allow encapsulated IPv6 traffic to
 be delivered locally

On Mon, Jan 24, 2022 at 3:50 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Sat, 22 Jan 2022 19:12:52 -0500 Sasha Levin wrote:
> > From: Ignat Korchagin <ignat@...udflare.com>
> >
> > [ Upstream commit ed6ae5ca437d9d238117d90e95f7f2cc27da1b31 ]
> >
> > While experimenting with FOU encapsulation Amir noticed that encapsulated IPv6
> > traffic fails to be delivered, if the peer IP address is configured locally.
>
> Unless Ignat and Amir need it I'd vote for not backporting this to LTS.
> This patch is firmly in the "this configuration was never supported"
> category. 5.15 and 5.16 are probably fine.

We planned to use it on 5.15 and onwards. Not backporting to 5.10 is
fine for us.