From owner-freebsd-net@freebsd.org Mon Mar 28 15:26:30 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 09D5EAE08A0 for ; Mon, 28 Mar 2016 15:26:30 +0000 (UTC) (envelope-from yuvalba@mellanox.com) Received: from emea01-am1-obe.outbound.protection.outlook.com (mail-am1on0081.outbound.protection.outlook.com [157.56.112.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "MSIT Machine Auth CA 2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 85F0C19D2 for ; Mon, 28 Mar 2016 15:26:28 +0000 (UTC) (envelope-from yuvalba@mellanox.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:To:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=K3+aDGZZoVlVLmM9+bN4YUWan588bY2nm9eIZxfI1EI=; b=eaYIwU1ge2NPyIhteOpycy47dlb7ctOVTE3ni5QDT2SYKzNxVkXUWX3awashp9XA7TnZV4I06XtgnJsNPvB0fIMt7khBGnlqU4xEwqOhAiI2SXYEeI8bHt+CMmhR2DoBve4TaSw4eM82gWzqNQYu8PqmxMDW3gXsPB5AgRcJgxI= Received: from DB5PR05MB1301.eurprd05.prod.outlook.com (10.162.157.150) by DB5PR05MB1302.eurprd05.prod.outlook.com (10.162.157.151) with Microsoft SMTP Server (TLS) id 15.1.447.15; Mon, 28 Mar 2016 15:26:19 +0000 Received: from DB5PR05MB1301.eurprd05.prod.outlook.com ([10.162.157.150]) by DB5PR05MB1301.eurprd05.prod.outlook.com ([10.162.157.150]) with mapi id 15.01.0443.016; Mon, 28 Mar 2016 15:26:19 +0000 From: Yuval Bason To: "freebsd-net@freebsd.org" Subject: Changing MTU on 10-stable Thread-Topic: Changing MTU on 10-stable Thread-Index: AdGJBXJv7xenZQf2RYODb+ukKXELaA== Date: Mon, 28 Mar 2016 15:26:18 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: freebsd.org; dkim=none (message not signed) header.d=none;freebsd.org; dmarc=none action=none header.from=mellanox.com; x-originating-ip: [193.47.165.251] x-ms-office365-filtering-correlation-id: 9e05cd45-70cf-4922-2805-08d3571d4fbd x-microsoft-exchange-diagnostics: 1; DB5PR05MB1302; 5:fmoqaTCiXJaovg8mtkKlfdwkZuqSxzJGWvw3RgUST6lTQuRh95KqdRu26f8PxiTsw/QDZqXgumcCIIZKDMv8qGtXlYN6WdYpxzH5MQcauJfRAGsUVUkpZVPWkIvfBwK6CxzP4oeqr+TlVu04VlrdbA==; 24:xzga68Hl+jjxgXzHLCayMySFUhDDIUhaiiYiA1E/IQDRV0u6nh4/AADaBjX/9VN/AXCDaaatQ+IM+7MkNOeC82eM6qqE1FmmO+bQ8YigPLU= x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DB5PR05MB1302; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(601004)(2401047)(8121501046)(5005006)(3002001)(10201501046); SRVR:DB5PR05MB1302; BCL:0; PCL:0; RULEID:; SRVR:DB5PR05MB1302; x-forefront-prvs: 0895DF8FFD x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(6009001)(53754006)(74316001)(68736007)(2900100001)(66066001)(92566002)(5002640100001)(450100001)(122556002)(54356999)(5640700001)(81166005)(5630700001)(1096002)(2501003)(1220700001)(5004730100002)(229853001)(86362001)(11100500001)(10400500002)(19625215002)(5003600100002)(107886002)(110136002)(102836003)(3846002)(790700001)(77096005)(19300405004)(6116002)(586003)(2351001)(50986999)(3280700002)(3660700001)(189998001)(558084003)(19580395003)(16236675004)(76576001)(87936001)(15975445007)(5008740100001)(2906002)(33656002); DIR:OUT; SFP:1101; SCL:1; SRVR:DB5PR05MB1302; H:DB5PR05MB1301.eurprd05.prod.outlook.com; FPR:; SPF:None; MLV:ovrnspm; PTR:InfoNoRecords; LANG:en; spamdiagnosticoutput: 1:23 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Mar 2016 15:26:18.8617 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB5PR05MB1302 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Mar 2016 15:26:30 -0000 Hi all, I noticed that mtu change is applied on 10-stable only after executing inte= rface down, and interface up again (which isn't necessary in 11-current). I checked the relevant kernel functions but couldn't find any difference. Do you know why? -Yuval