From patchwork Sun Apr 5 13:48:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?UTF-8?q?Bastien=20Roucari=C3=A8s?= X-Patchwork-Id: 1266548 X-Patchwork-Delegate: shemminger@vyatta.com Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=s7Po536R; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48wFRW1KCFz9sSK for ; Sun, 5 Apr 2020 23:50:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726992AbgDENuM (ORCPT ); Sun, 5 Apr 2020 09:50:12 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:52143 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726636AbgDENuL (ORCPT ); Sun, 5 Apr 2020 09:50:11 -0400 Received: by mail-wm1-f65.google.com with SMTP id z7so11923187wmk.1 for ; Sun, 05 Apr 2020 06:50:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references:reply-to :mime-version:content-transfer-encoding; bh=g+EzbDgNHcny7V1/rXInEyYbJZPFkFyRAooC47Bhups=; b=s7Po536R5z1GomtZidxxfWwidSMT34gztFZDCVBI/fVVufVQNV0SiCDLd97dsIVJv0 pdQhQtqqbE5+d4e9kIfbIKVLBR98F33ZO5mBMYpoTdSnBfGo9L3lMdDw/tXnlvopT+O5 iSY2sWXIKvDKpBgYx8IO8lK9svXJMvA3cWcc2YNe9H004benAr1GCxdk7dQRzjNSTblG Ocv8FsdX/ZQRmSpx27xDZ2JBxaXZq+u66OYUQJ3DqJ9oGp1roN8Kh7xLIxeh0VBwYh6F MtcNEuYbRkFgJlTF01s0yXxNxjEADMdw/Gp10RM3pBmbrKgvvyfS77S4TbKyVK5EYIit s9UA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:reply-to:mime-version:content-transfer-encoding; bh=g+EzbDgNHcny7V1/rXInEyYbJZPFkFyRAooC47Bhups=; b=BN5VFPrvJie69reulBZrC0Qilt67l6U9nihAdkKXlx48bTEh/Du7vQjLZ8CryZHx0M 2wPm0bRpufO67g3lmYZ2qcywJ/0Khtcmz5O26fx6cSJUNfYmIAjVX3N8ACpWTNtUDAOV sUkkcx9A+909//NzDZ20oZQmG+YayualO3YNFNoe3im9Qnvin7iBqp3tVxY3U3ffHqyf L+OlfVHEdy+f8pFLzPqwOvDFpj35kJuuAnFGrwwZ4V8l2FkOUHBuWXF+853aow9Aup4Z lUgvwa3YkS5vQ985JIsLRxv+5wpdkmJ02hMczqvYuZLJcZhB2zlVwXKVOoxoSXTqJHZl XSDQ== X-Gm-Message-State: AGi0PuZMGM4ZEXejc2mgu+vzxvgvgXw2Mv9fqOt9oQvRyaluqOqmbtww 5VEnnVQapxopzqyXdv8aZos2X0iU X-Google-Smtp-Source: APiQypK7Dzk3vQzlaYQzTuQQPFNfuo9kWhSmxEmpgWJTj/+Jodny6K3vJrd6Bg92UUBee6TBfPOhew== X-Received: by 2002:a1c:cc16:: with SMTP id h22mr17302087wmb.47.1586094609082; Sun, 05 Apr 2020 06:50:09 -0700 (PDT) Received: from localhost ([2a01:e35:2f01:a61:fc49:14b:88c:2a9c]) by smtp.gmail.com with ESMTPSA id n64sm1922294wme.45.2020.04.05.06.50.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Apr 2020 06:50:08 -0700 (PDT) From: "=?UTF-8?q?Bastien=20Roucari=C3=A8s?=" X-Google-Original-From: =?utf-8?q?Bastien_Roucari=C3=A8s?= To: netdev@vger.kernel.org Cc: =?utf-8?q?Bastien_Roucari=C3=A8s?= Subject: [PATCH iproute2 5/6] Document root_block option Date: Sun, 5 Apr 2020 15:48:57 +0200 Message-Id: <20200405134859.57232-6-rouca@debian.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200405134859.57232-1-rouca@debian.org> References: <20200405134859.57232-1-rouca@debian.org> Reply-To: rouca@debian.org MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Root_block is also called root guard, document it. Signed-off-by: Bastien Roucariès --- man/man8/bridge.8 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/man/man8/bridge.8 b/man/man8/bridge.8 index 53aebb60..96ea4827 100644 --- a/man/man8/bridge.8 +++ b/man/man8/bridge.8 @@ -372,6 +372,11 @@ enabled on the bridge. By default the flag is off. Controls whether a given port is allowed to become root port or not. Only used when STP is enabled on the bridge. By default the flag is off. +This feature is also called root port guard. +If BPDU is received from a leaf (edge) port, it should not +be elected as root port. This could be used if using STP on a bridge and the downstream bridges are not fully +trusted; this prevents a hostile guest for rerouting traffic. + .TP .BR "learning on " or " learning off " Controls whether a given port will learn MAC addresses from received traffic or