From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
To: Eric Dumazet <edumazet@google.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <horms@kernel.org>,
netdev@vger.kernel.org, eric.dumazet@gmail.com,
Noam Rathaus <noamr@ssd-disclosure.com>,
Steffen Klassert <steffen.klassert@secunet.com>
Subject: Re: [PATCH net] ip6_vti: set netns_immutable on the fallback device.
Date: Mon, 8 Jun 2026 18:13:29 +0200 [thread overview]
Message-ID: <3e2536d5-317d-4d0b-b489-e77f5be9bdaf@6wind.com> (raw)
In-Reply-To: <20260608155918.787644-1-edumazet@google.com>
Le 08/06/2026 à 17:59, Eric Dumazet a écrit :
> john1988 and Noam Rathaus reported that vti6_init_net() does not set the
> netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0).
>
> Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel)
> correctly set this flag during their fallback device initialization to
> prevent them from being moved to another network namespace.
>
> Fixes: 61220ab34948 ("vti6: Enable namespace changing")
> Reported-by: Noam Rathaus <noamr@ssd-disclosure.com>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
> Cc: Steffen Klassert <steffen.klassert@secunet.com>
Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
prev parent reply other threads:[~2026-06-08 16:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-08 15:59 [PATCH net] ip6_vti: set netns_immutable on the fallback device Eric Dumazet
2026-06-08 16:13 ` Nicolas Dichtel [this message]
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