From owner-freebsd-questions@freebsd.org Wed Apr 29 17:46:17 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 175842BCC67 for ; Wed, 29 Apr 2020 17:46:17 +0000 (UTC) (envelope-from ypankov@fastmail.com) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 49C5Xm462bz4Z3W for ; Wed, 29 Apr 2020 17:46:16 +0000 (UTC) (envelope-from ypankov@fastmail.com) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id EE7B65C03FB; Wed, 29 Apr 2020 13:46:15 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Wed, 29 Apr 2020 13:46:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastmail.com; h= subject:to:references:from:message-id:date:mime-version :in-reply-to:content-type:content-transfer-encoding; s=fm2; bh=t /nsh4PFR65qDoP6IdD8mQ7bRrsTmaMVtQv3PrHpUto=; b=EaZ3LgbItavgN/paj izXqUcD/Q9AMx+1FhT6CsynuOgyDq6nokfyA77gbsW5FRNCQCJeMvQohVhz3yavx vQMtLpw9LYXlvRrauiCRu/kmJtZCN/W5bam0A2pAiRZRnkrdxL8LPkE2vImqVo+X ei6eA3a2poPBmQI3n70Yl6Fmkel4VGHCjwwjiHcCpaRfh3M0NuDIyfGzKBherHEe +jEIP194mbxb7gAc02W83+42uO6QZRiTVf0H6FKufxDlJirJaPwl3XHS8GhJp+Tm ObboritOJyIK0Yln8pzzN8kkk0a+Gpoj+adamaSdWkKyrEaVwMXQYCf8sHNli+Rw jd5Jg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=t/nsh4PFR65qDoP6IdD8mQ7bRrsTmaMVtQv3PrHpU to=; b=k9Hxop9fmLBJYJStYqF2e6yprfFsfp0w6+nl23TEtSTasNmObtIyJoMR5 t+x+TuL3hG+dxP9RWV7SMRJ7SS8Hb175Ewz38xY5m4hbPyrAwIts8Tt0RlpJkCkP PAQJ0WDKDPnNBqeYuGYtdMO758hHciZEZEJibfXZJ/Eqt/rMuAjO8dUx+F//OdD1 BJ7KQB+e+SgcZwplCE5mUX7xavk8aBDAX2fObNK7Leb2TQ/A8u0fCEOrTbG9WjTa Ab1j4gftDS2e1fR7kBCcfoE7gC+sZ7weptu4ns66HEi3+Yt79fe/qQBCU/A36Dqx t2eSbRq+/mqPgeJA5//C1/yLEAkTw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrieefgdduudeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefuvfhfhffkffgfgggjtgfgsehtje ertddtfeejnecuhfhrohhmpegjuhhrihcurfgrnhhkohhvuceohihprghnkhhovhesfhgr shhtmhgrihhlrdgtohhmqeenucggtffrrghtthgvrhhnpeevteeilefghfffgeffteefie dttdfgudetgeduvddtgffguefftdeiteelhfegteenucfkphepkeehrddujeegrddvtdej rddvudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh ephihprghnkhhovhesfhgrshhtmhgrihhlrdgtohhm X-ME-Proxy: Received: from [192.168.1.6] (unknown [85.174.207.217]) by mail.messagingengine.com (Postfix) with ESMTPA id 46D9E3065EB5; Wed, 29 Apr 2020 13:46:15 -0400 (EDT) Subject: Re: Drivers for NIC (igb vs em)? To: jester@panix.com, freebsd-questions@freebsd.org References: <20200429165235.GA17720@panix.com> From: Yuri Pankov Message-ID: Date: Wed, 29 Apr 2020 20:46:14 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200429165235.GA17720@panix.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 49C5Xm462bz4Z3W X-Spamd-Bar: ++++++ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=fastmail.com header.s=fm2 header.b=EaZ3LgbI; dkim=pass header.d=messagingengine.com header.s=fm2 header.b=k9Hxop9f; dmarc=pass (policy=none) header.from=fastmail.com; spf=pass (mx1.freebsd.org: domain of ypankov@fastmail.com designates 66.111.4.28 as permitted sender) smtp.mailfrom=ypankov@fastmail.com X-Spamd-Result: default: False [6.08 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[28.4.111.66.rep.mailspike.net : 127.0.0.18]; R_SPF_ALLOW(0.00)[+ip4:66.111.4.28:c]; FREEMAIL_FROM(0.00)[fastmail.com]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[fastmail.com:+,messagingengine.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(0.00)[fastmail.com,none]; RECEIVED_SPAMHAUS_PBL(0.00)[217.207.174.85.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.11]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[fastmail.com]; ASN(0.00)[asn:11403, ipnet:66.111.4.0/24, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[28.4.111.66.list.dnswl.org : 127.0.5.1]; ARC_NA(0.00)[]; RECEIVED_SPAMHAUS_XBL(5.00)[217.207.174.85.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.4]; R_DKIM_ALLOW(0.00)[fastmail.com:s=fm2,messagingengine.com:s=fm2]; NEURAL_HAM_MEDIUM(-0.81)[-0.812,0]; SUBJECT_ENDS_QUESTION(1.00)[]; FROM_HAS_DN(0.00)[]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; IP_SCORE_FREEMAIL(0.00)[]; BAD_REP_POLICIES(0.10)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_SPAM_LONG(0.99)[0.991,0]; IP_SCORE(0.00)[ip: (-9.83), ipnet: 66.111.4.0/24(-4.89), asn: 11403(-2.69), country: US(-0.05)] X-Spam: Yes X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Apr 2020 17:46:17 -0000 jester@panix.com wrote: > > This is (I think) a basic networking hardware question. I'm actually running FreeNAS 11.3, but I assume this relates to the underlying system. > > I have a motherboard with two built-in NICs. These appear as em0 and igb0. I'm just wondering why these are created with different drivers, instead of as em0 and em1 or igb0 and igb1. Is this something I have any control over? > > (I originally came to this question when I was considering using link aggregation with LACP, and it's recommended to do this only with the same NIC driver. I've subsequently decided not to do this, but remain curious about the underlying driver issue.) The two were merged starting with FreeBSD 12.0 under the "em" name; I don't know the exact historical reasons those were separate though.