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 5C44D7E9EE for ; Thu, 11 Nov 2021 11:46:45 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 52AA5940C for ; Thu, 11 Nov 2021 11:46:45 +0100 (CET) Received: from office.oderland.com (office.oderland.com [91.201.60.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 7C712946E for ; Thu, 11 Nov 2021 11:46:44 +0100 (CET) Received: from [193.180.18.161] (port=41190 helo=[10.137.0.14]) by office.oderland.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1ml7bK-004RM8-5s for pve-devel@lists.proxmox.com; Thu, 11 Nov 2021 11:46:38 +0100 Message-ID: <196c3dc5-f926-55a9-661c-e7b9146c7b27@oderland.se> Date: Thu, 11 Nov 2021 11:46:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:93.0) Gecko/20100101 Thunderbird/93.0 Content-Language: en-US To: pve-devel@lists.proxmox.com References: <20210924084855.3074162-1-aderumier@odiso.com> <179fb53f-5dff-8d3a-38b6-a392b9bcb581@proxmox.com> From: Josef Johansson In-Reply-To: <179fb53f-5dff-8d3a-38b6-a392b9bcb581@proxmox.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - office.oderland.com X-AntiAbuse: Original Domain - lists.proxmox.com X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - oderland.se X-Get-Message-Sender-Via: office.oderland.com: authenticated_id: josjoh@oderland.se X-Authenticated-Sender: office.oderland.com: josjoh@oderland.se X-SPAM-LEVEL: Spam detection results: 0 AWL 1.882 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -3.999 Looks like a legit reply (A) SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: Re: [pve-devel] [PATCH pve-common 0/2] add disable bridge learning feature X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Nov 2021 10:46:45 -0000 On 11/11/21 11:40, Thomas Lamprecht wrote: > On 24.09.21 10:48, Alexandre Derumier wrote: >> Currently, if bridge receive an unknown dest mac (network bug/attack/..), >> we are flooding packets to all bridge ports. >> >> This can waste cpu time, even more with firewall enabled. >> Also, if firewall is used with reject action, the src mac of RST >> packet is the original unknown dest mac. >> (This can block the server at Hetzner for example) >> >> So, we can disable learning && unicast_flood on tap|veth|fwln port interface. >> Then mac address need to be add statically in bridge fdb. > I'm a bit out of the loop of the with the whole bad hetzner network thingy, is this still > relevant as I'd see if I can get it in finally.. > > > _______________________________________________ > pve-devel mailing list > pve-devel@lists.proxmox.com > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel > Hi, Is it not enough to turn off unicast_flood on fwpr*? If I have unicast_flood on fwln some scenarios does not work. I have been running it a while now and it seems to solve all odd quirks we've had with the networking on PVE. Regards Josef