From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id CD3B7C8E4 for ; Wed, 4 May 2022 14:17:42 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id C2A3F27A71 for ; Wed, 4 May 2022 14:17:42 +0200 (CEST) Received: from mail.hlrs.de (mail.hlrs.de [141.58.2.50]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id C590827A65 for ; Wed, 4 May 2022 14:17:38 +0200 (CEST) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.hlrs.de (Postfix) with ESMTP id 79EF25EA020F for ; Wed, 4 May 2022 14:11:01 +0200 (CEST) Received: from mail.hlrs.de ([127.0.0.1]) by localhost (mail.hlrs.de [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id mxjeOE7NRWvK for ; Wed, 4 May 2022 14:11:01 +0200 (CEST) X-Virus-Scanned: amavisd-new at mail.hlrs.de DKIM-Filter: OpenDKIM Filter v2.10.3 mail.hlrs.de 4E8105EA0631 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hlrs.de; s=1806FB76-797D-11E5-BCE5-7B280A126CD4; t=1651666261; bh=tabPion8C+UmKzqEt73pS4qNiUEKdjWWimnli16EVlM=; h=Date:From:To:Message-ID:MIME-Version; b=JTXXSOLi0fLhC3W02eZqGxZ0X7ES5/R0zrHsCTUW8RxMUmjtPYZ80TcxKtUyxqekB 9UDhRQU0p0HMuqNYcfSN/DMf7MaMfQ2hwE+x+jZFNGkXqpNWdNm7qpzkrQXY5oUxNX r8jzRI7660t2PKecUzix+YXH203OyURtKWaiOjNk= Received: from schleppmd.hlrs.de (hpcn-vpnip-141-58-15-240.hlrs.de [141.58.15.240]) by mail.hlrs.de (Postfix) with ESMTPSA id 2293B5EA020F for ; Wed, 4 May 2022 14:11:01 +0200 (CEST) Date: Wed, 4 May 2022 14:10:59 +0200 From: Martin Dziobek To: pve-user@lists.proxmox.com Message-ID: <20220504141059.48ab3303@schleppmd.hlrs.de> In-Reply-To: References: Organization: HLRS Uni Stuttgart X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.003 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_NONE 0.001 SPF: sender does not publish an SPF Record T_SCC_BODY_TEXT_LINE -0.01 - Subject: [PVE-User] Proxmox VE 7.2 - Problem of understanding 'bridge-disable-mac-learning' X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 May 2022 12:17:42 -0000 Dear all, In the Release Notes of 7.2, it says: "Administrators can now disable MAC learning on a bridge in /etc/network/interfaces with the bridge-disable-mac-learning flag. This reduces the number of packets flooded on all ports (for unknown MAC addresses), preventing issues with certain hosting providers (for example, Hetzner), which resulted in the Proxmox VE node getting disconnected" where as in descriptions of how to disable mac bridge learning for example on https://www.xmodulo.com/disable-mac-learning-linux-bridge.html it says: "Once MAC learning is turned off, a Linux bridge will flood every incoming packet to the rest of the ports. Understand this implication before proceeding." So flooding is reduced *or* increased ... May someone shed a light on this ? Best regards, Martin