From nobody Thu Sep 19 01:17:06 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 B273E153BC7 for ; Wed, 5 Jun 2024 20:38:25 +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=1717619905; cv=none; b=E5ztTR/kpOBb5dj5/lAtZH7DMI4PwP/7RyZuIPAxTe3G5xacaHsdHHNX3oJ+7dE84cUuJCs12AUL5VoB8gt8ivVnFPUQgpbnThiVfrWMUkqnVIvIxs8SNM1EJmTgMEGVAX0DB/Cy/Zz5utVwtUxBceEttnDP03kXDUKYeYWwuO0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717619905; c=relaxed/simple; bh=pIVfNkxc+mPYqZGQojFIn+WxckG/GUW9vK4e4w4W1C0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=l7192leImCm/JfTIHWlWaKVkOCLv7VgJU4/oYcIStuhhuCw3rJqz+i8gQt/rACcr8ZII0kAvNAvs+kEIiU6Vpf4EEFR5kRK2hUbfEUhC+510CmyYStfJuS8PuxOvVp95gd3wzKWZWG91ADMG98zBNKFITnFpflHWFZ44HmGm0vg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PVLtaRj+; 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="PVLtaRj+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65AAEC4AF09; Wed, 5 Jun 2024 20:38:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717619905; bh=pIVfNkxc+mPYqZGQojFIn+WxckG/GUW9vK4e4w4W1C0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=PVLtaRj+Ndig5puPIoh0q7RkHk95KrRmyeIT8Sibp6Y2z+dL5uUj0y9+UlTjwvPz4 BkS5Zlmpm96Zw3TDOI6bwRHShLlW90J4hExX25mtC7niujrFZSIyTp9uHhDQ6O+3vU 2a34txiuJDMZifW5KL9dPrtsFnGlSDUuy15l946LbH+UTDNFnDXr8mM7V/dy6mZGwM hLTe9XC6gnaYqbaAPDdRm1p0ks0wA+aU7Qab/wy9m0U4nct8vwKLRs6tIqrP/OxQeb gKTawyCgiypsKPc/qqNbUI5kuyocTrjZRnzZRB8n3wx4w2UyfPJL7FjunuwDqGwp1D XB6eekVXC5bdQ== From: "Matthieu Baerts (NGI0)" Date: Wed, 05 Jun 2024 22:38:12 +0200 Subject: [PATCH mptcp-iproute 1/4] 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: <20240605-mptcp-user-feedback-v1-1-d2dc3b399643@kernel.org> References: <20240605-mptcp-user-feedback-v1-0-d2dc3b399643@kernel.org> In-Reply-To: <20240605-mptcp-user-feedback-v1-0-d2dc3b399643@kernel.org> To: MPTCP Upstream Cc: "Matthieu Baerts (NGI0)" X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1143; i=matttbe@kernel.org; h=from:subject:message-id; bh=pIVfNkxc+mPYqZGQojFIn+WxckG/GUW9vK4e4w4W1C0=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBmYMy9Z4NoFkQPZ8RBU9Rcax3wBOzDbZtTQkahz TkXgkTOFN6JAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZmDMvQAKCRD2t4JPQmmg c4VSD/49Q51RTaobCNiTEAZKxS6O6pvee8FBzH63ZZUGTjU30nZcOuOLs4JBQi1MlMq7C4fg3Fq 6EyeSkkmouktOQktSVLkfcRYhqkiIlt0BGfcmH6OsQnOxz2c3N2s/aG48tXeWUZBqA99q6gdri9 Dp5vpkbv5XNPoxEE8Vx+E5ZDbOCJw5mZ5VdUkQsJ5yGZYD++nXi2WCtHnlwdyEzmhJORKJEEJBQ Nj//FSo91m/bjKrI6qeHk3UcXfOu3gcwkdqD8d9eY09YypebBcBPjaZtYo4dLeiubsKVg7LLzpO epbZ5EY5lh1nyqOqvShg7eWRjw3dtDvVymOKxDdf/MIZUiP05PdaiBb7jtamkDZh+BI6U6+Slyb TqxVOWLP+4LcciEYKC1J8r4p8Z8QbrAZQ9tMyiZptKuUPKWBeL1EboQGS5+6Uk5w/MIEDg+YgON DUQ9Ei4clKRwT+OovPq4hwphb5wT1yPDYccJPQoprvHj7hIAM98PxBrBXW8RbwejbyULGN6AnXK 2mvFXEnnWArOUyrRlEdjZceJ7Qi5duxONvJe5XefaxbIRpFFbhrklCQEXJwHmSO0yHxTJj2fRsh qzLhkTCv2xXqiIFi4WJfilRzBFKMwSedJH5tcOIKY3d9nbB04wMlMjJWGKAQfSLS22oRuaDM8cs 2vog6P7zEt5L8kw== 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 2.43.0