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Received: from AM0PR04MB6467.eurprd04.prod.outlook.com (2603:10a6:208:16c::20) by VI1PR04MB7005.eurprd04.prod.outlook.com (2603:10a6:803:136::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7002.12; Thu, 16 Nov 2023 10:14:53 +0000 Received: from AM0PR04MB6467.eurprd04.prod.outlook.com ([fe80::5c46:ada1:fcf3:68e6]) by AM0PR04MB6467.eurprd04.prod.outlook.com ([fe80::5c46:ada1:fcf3:68e6%6]) with mapi id 15.20.7002.018; Thu, 16 Nov 2023 10:14:53 +0000 Message-ID: <53b66aee-c4ad-4aec-b59f-94649323bcd6@suse.com> Date: Thu, 16 Nov 2023 11:14:49 +0100 User-Agent: Mozilla Thunderbird Content-Language: en-US To: =?UTF-8?Q?Bj=C3=B8rn_Mork?= Cc: "netdev@vger.kernel.org" , USB list From: Oliver Neukum Subject: question on random MAC in usbnet Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: FR4P281CA0353.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:f4::16) To AM0PR04MB6467.eurprd04.prod.outlook.com (2603:10a6:208:16c::20) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM0PR04MB6467:EE_|VI1PR04MB7005:EE_ X-MS-Office365-Filtering-Correlation-Id: cfd50e44-303a-400b-6eca-08dbe68ce010 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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In particular why that is a singular address. Frankly that seems plainly wrong. A MAC is supposed to be unique, which is just fundamentally incompatible to using the same MAC for multiple devices, as usbnet currently potentially does. Do you think that behavior should be changed to using a separate random MAC for each device that requires it? Regards Oliver