From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM03-CO1-obe.outbound.protection.outlook.com (mail-co1nam03on0706.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe48::706]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id BC8841A1DF3 for ; Wed, 10 Aug 2016 11:17:14 -0700 (PDT) Received: from AT5PR84MB0291.NAMPRD84.PROD.OUTLOOK.COM (10.162.138.25) by AT5PR84MB0290.NAMPRD84.PROD.OUTLOOK.COM (10.162.138.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.549.15; Wed, 10 Aug 2016 18:17:12 +0000 Received: from AT5PR84MB0291.NAMPRD84.PROD.OUTLOOK.COM ([10.162.138.25]) by AT5PR84MB0291.NAMPRD84.PROD.OUTLOOK.COM ([10.162.138.25]) with mapi id 15.01.0549.025; Wed, 10 Aug 2016 18:17:12 +0000 From: "Cohen, Eugene" To: "edk2-devel@lists.01.org" , "Wu, Jiaxin" Thread-Topic: DHCP Automatic Configure at Driver Connect Thread-Index: AdHzMrTK7bp7ndKxTJOq/Qc4XXghzQ== Date: Wed, 10 Aug 2016 18:17:12 +0000 Message-ID: Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=eugene@hp.com; x-originating-ip: [15.65.254.4] x-ms-office365-filtering-correlation-id: a81d9544-c17f-4530-ecb2-08d3c14a8cc3 x-microsoft-exchange-diagnostics: 1; AT5PR84MB0290; 6:J2rXxPVBYo2xgRt7+WtjfBsBAOidAeOhXAKLMVlSpqDwpUowZodMW2XqGkhxEtgtWVbDhSk7RFfIfUpJGLUeBcqMs5w8Rq6s0uVZYAZQ1MTLmn6qEC4pG4A/ndSSus48uS5Ff04wzHQhyinJC5PuuChZr/qLg0TuO/rSnd60jRy0w+zZGjfE9/7fFVPIBYnVPDpFKjgPbbox5qiN431hT34wWyQSNTiThOAbS/ckKU+nB0bx105Yzn6qpodgUiaYUzszuukS9hO/vob0j2QvjiFi9BhthhS6uvzaaWsh9+k=; 5:QwEge0G/ezuuTTFIr2RFOb8jRFVZdpO7dCaGZA3VymGvYVQLEpJ5PXXWDgiv0OlYVV8skXRtXMA+yKr7OXFtkslxvQ1ZZiC5fcWoLI3LVH7BqGnbCUAGNlKrzuquUqUuFE+69lLMBMAojRc/i6DQNQ==; 24:RO6BcmO9NQGZ6pt4BLJ1dloqV9N2SUjby9UKXEQN9lzRsLMsENyLkjqbZkDDvbc49jmNtc0yQ4fkV/7hfSBp7vy3b3ylClJQt1ceHhUm8aE=; 7:Ux5WRBXEDS1ycYQ1yRR3cDi09qBXi6fOtR3vvkLtM+D9gpkRmPhTaIrAO8P2mrndbClVOCC6JQxoB8UprjHdB8HP4TOGe8WVeiGDLe7bt8xvHMmRF9amY8+WdmdEGKasMaBB9xty475esTdUIGWdGY3pZw3sfxVnn1O1/VMkE3QwQelkPeIzdm8/rC4quO9VmY+i0s6xG2fslQugnW/N+leqKHpSpp7qwXbqZFw0ZcMwefQ+WCW61sFn8/3XUrXm x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:AT5PR84MB0290; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(21532816269658)(228905959029699); x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(601004)(2401047)(8121501046)(5005006)(3002001)(10201501046); SRVR:AT5PR84MB0290; BCL:0; PCL:0; RULEID:; SRVR:AT5PR84MB0290; x-forefront-prvs: 0030839EEE x-forefront-antispam-report: SFV:NSPM; SFS:(10019020)(6009001)(7916002)(377454003)(189002)(199003)(6602003)(81156014)(2906002)(586003)(87936001)(2900100001)(86362001)(81166006)(54356999)(6116002)(8936002)(77096005)(11100500001)(8676002)(102836003)(3846002)(33656002)(3660700001)(2501003)(101416001)(10400500002)(50986999)(19580405001)(66066001)(3280700002)(19580395003)(305945005)(122556002)(97736004)(92566002)(7736002)(7846002)(7696003)(106356001)(189998001)(229853001)(107886002)(105586002)(99286002)(5002640100001)(9686002)(5001770100001)(68736007)(74316002); DIR:OUT; SFP:1102; SCL:1; SRVR:AT5PR84MB0290; H:AT5PR84MB0291.NAMPRD84.PROD.OUTLOOK.COM; FPR:; SPF:None; PTR:InfoNoRecords; MX:1; A:1; LANG:en; received-spf: None (protection.outlook.com: hp.com does not designate permitted sender hosts) spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: hp.com X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Aug 2016 18:17:12.1241 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: ca7981a2-785a-463d-b82a-3db87dfc3ce6 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AT5PR84MB0290 Subject: DHCP Automatic Configure at Driver Connect X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Aug 2016 18:17:15 -0000 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable With this commit: Revision: 1f6729ffe98095107ce82e67a4a0209674601a90 Author: jiaxinwu Date: 7/7/2015 2:19:55 AM Message: MdeModulePkg: Update Ip4Dxe driver to support Ip4Config2 protocol, a new behavior seemed to come in to the network stack that was not present = before: It appears now that as soon as the DHCP Service Binding protocol is= installed the DHCP process will be initiated (see Ip4Config2OnDhcp4SbInsta= lled). This differs from past behavior where DHCP would only occur if a dr= iver or application specifically did Configure() on the network interface. For some systems this is problematic because they need to defer DHCP until = it is certain that the network interface will be used for something. Can you provide the reason for this change? Can we have a policy (PCD) to = disable this mode of operation? Thanks, Eugene