From nobody Thu Sep 19 00:52:19 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CDBD113C3EE for ; Tue, 23 Jul 2024 16:31:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721752291; cv=none; b=H8k44qZn2eQmY8ZekqNDfAoCf/94SPvwjmJVzohmUJ0xWkWusI6+q7EnWMXaJEHn36K3A0kakcXxuspjs6WuGBFA1OsvQ0SjB7WWlj6tVdw4PWTovrxC59RjWQz68eRmOAfMftm9CNi4Ml2V6ygThZeuCybgoFxkSXxUZOBrtf8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721752291; c=relaxed/simple; bh=MyS+EwUW0YWnKz/PhHMEA8YFpC8AJpbZ+hVxc3AqPZ0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=sG1d2FeYvXQkJ8w8x0iXuoUlHh/1/fpGx4zeDGWKtscZLGDU7BNE9c2h3WkBKwDWhgiUOH2sFimIS3aXiGSIaXOogGGfrfDk63MonO/5DNrF0ySyJE0cpDRB+V9NszSOirRKo0V2cBA8LpT4rvTeitjGtHytk2cq5UEeaPY8sMk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e9aSqqFU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e9aSqqFU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8FB58C4AF0A; Tue, 23 Jul 2024 16:31:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721752291; bh=MyS+EwUW0YWnKz/PhHMEA8YFpC8AJpbZ+hVxc3AqPZ0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=e9aSqqFUHI17Y7YaKINDhpYkAofcO9aLS+Dedf/YqqSCDJZ3TKxYVisuY73SLpa7G aEzSdzRt0SAk1k5yGikU0iZ2Yhon0neCF8X0375RysQ48lUU7r4vb+k+DWZkLXQWmD nShTaQtvDYsnVSCB5w3lcHdnMymV7QBzWwX33D37q3BrH++I+sJ8t1Zj/IHdUbTA9h bJoP7xbkAvPlTv1koToVKCrM+Vnyz6t0Bate3Mtuf61NU86/7xJOIODnMYzSAXkqyN CKg8JSo1nc/kVZ+7OJNDTeHsm6e01nCLwSBslrRD4JBiSDh+Phst0KqGijYhj2B4fi 6+as/G7WwrodQ== From: "Matthieu Baerts (NGI0)" Date: Tue, 23 Jul 2024 18:31:04 +0200 Subject: [PATCH mptcp-iproute v2 1/7] man: mptcp: document 'dev IFNAME' Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240723-mptcp-user-feedback-v2-1-59f18975401c@kernel.org> References: <20240723-mptcp-user-feedback-v2-0-59f18975401c@kernel.org> In-Reply-To: <20240723-mptcp-user-feedback-v2-0-59f18975401c@kernel.org> To: MPTCP Upstream Cc: Mat Martineau , "Matthieu Baerts (NGI0)" X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1143; i=matttbe@kernel.org; h=from:subject:message-id; bh=MyS+EwUW0YWnKz/PhHMEA8YFpC8AJpbZ+hVxc3AqPZ0=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBmn9rgAxKRbpRXotYAaZU0s+NBPm7GZvCk4UP5h zFb9teYI3eJAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZp/a4AAKCRD2t4JPQmmg c85EEAC5E6YJMQwu6tDN5kmtRxZW9CFWdWi+t19JaQfW6xl95YR1aJe4PKy6XRr06styc388CLs YUrmw6zUdZhY0X6YEPoJjXbJmYyVN590fiEtOloAi70XNklhnFhBgjWUN3UygN69QmnJSoXBr1+ itXTwi+u+OGcS3No9b9XDcoAngrDUoJRrgj7QfsudwERqlUz75wENqbemmpED3jcBNG1acYfi1M hywDh8zEafuQ3uNWnnRjSKoC4RKY435Xt9IiyeGiTsM6pLueepzusM2HqAiFJsk42dU7lsgzuAi zXxeoGl4lSSeZokPNhnHBrMNlozB2dkWlsLby7jdafih7p75wgLzpaA1voY1Ml55rl4G3dyX9QN zd2Qw/WSUYyvmiAlV/aWpBg0V09b3+5VbdsoyZdrwARRBBilFOH9Ga8Njywd3gTnwgoZapIED4+ Vdu9NqqHJxSOtz8UKMCydSJZzSz0rOe2RfLbeQD9KFxWM6Kq9heh6pY01N1rugPgwC6NuKnDbLq jfO6iiJ+LA7CPU/ZA9P872amyuUwzTmIPgBPwIPuUtydEw4DszPFyZqsDduZvIvZIBDwMrmhLdH eQHkfLomy24JJEchwFNnGKm5cnGr6dMSUbLnTJ1yqGSqaDMA+GccpAXGG9ZtFRU+G2ClJpFGjxR lnwX+WPHtht+ytw== X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 It was missing, while it is a very important option. Indeed, without it, the kernel might not pick the right interface to send packets for additional subflows. Mention that in the man page. Signed-off-by: Matthieu Baerts (NGI0) --- man/man8/ip-mptcp.8 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/man/man8/ip-mptcp.8 b/man/man8/ip-mptcp.8 index 6c708957..89fcb64f 100644 --- a/man/man8/ip-mptcp.8 +++ b/man/man8/ip-mptcp.8 @@ -135,6 +135,14 @@ established MPTCP sockets will be accepted on the spec= ified port, regardless the original listener port accepting the first MPTCP subflow and/or this peer being actually on the client side. =20 +.TP +.IR IFNAME +is the network interface name attached to the endpoint. It is important to +specify this device name linked to the address to make sure the system kno= ws how +to route packets from the specified IP address to the correct network inte= rface. +Without this, it might be required to add IP rules and routes to have the +expected behavior. + .TP .IR ID is a unique numeric identifier for the given endpoint --=20 2.45.2