From owner-freebsd-net@freebsd.org Wed Jul 1 08:02:29 2015 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 0F762993E90 for ; Wed, 1 Jul 2015 08:02:29 +0000 (UTC) (envelope-from wjw@digiware.nl) Received: from smtp.digiware.nl (smtp.digiware.nl [31.223.170.169]) (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 C502919AC; Wed, 1 Jul 2015 08:02:28 +0000 (UTC) (envelope-from wjw@digiware.nl) Received: from rack1.digiware.nl (unknown [127.0.0.1]) by smtp.digiware.nl (Postfix) with ESMTP id D4C191534C4; Wed, 1 Jul 2015 10:02:24 +0200 (CEST) X-Virus-Scanned: amavisd-new at digiware.nl Received: from smtp.digiware.nl ([127.0.0.1]) by rack1.digiware.nl (rack1.digiware.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oNEa3pxW8II7; Wed, 1 Jul 2015 10:02:15 +0200 (CEST) Received: from [IPv6:2001:4cb8:3:1:6501:7945:3e71:f257] (unknown [IPv6:2001:4cb8:3:1:6501:7945:3e71:f257]) by smtp.digiware.nl (Postfix) with ESMTPA id DEEC015344D; Wed, 1 Jul 2015 10:02:15 +0200 (CEST) Message-ID: <55939E88.5090804@digiware.nl> Date: Wed, 01 Jul 2015 10:02:16 +0200 From: Willem Jan Withagen User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Julian Elischer , freebsd-net@freebsd.org Subject: Re: Same NIC name to MAC mapping on FreeBSD References: <559131AC.6010304@winterei.se> <559361B3.9030702@freebsd.org> In-Reply-To: <559361B3.9030702@freebsd.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Jul 2015 08:02:29 -0000 On 01/07/2015 05:42, Julian Elischer wrote: > On 7/1/15 6:56 AM, Adrian Chadd wrote: >> Hi, >> >> If we don't support this as part of the interface renaming stuff, it >> would certainly be good to. >> >> >> a- >> >> >> On 29 June 2015 at 21:36, Wei Hu wrote: >>>> -----Original Message----- >>>> From: owner-freebsd-net@freebsd.org [mailto:owner-freebsd- >>>> net@freebsd.org] On Behalf Of Paul S. >>>> Sent: Monday, June 29, 2015 7:53 PM >>>> To: freebsd-net@freebsd.org >>>> Subject: Re: Same NIC name to MAC mapping on FreeBSD >>>> >>>> On my production systems, I've never seen it deviate without hardware >>>> changes. >>>> >>>> Are you seeing otherwise? >>>> >>> In Hyper-V, if say three NICs were assigned to the VM, I got >>> following mapping >>> Initially: >>> >>> Hn0 -> MAC 0 >>> Hn1 -> MAC 1 >>> Hn2 -> MAC2 >>> >>> Then if I remove the NIC with MAC 1 and reboot, I want the other two >>> interfaces to keep the same >>> Names instead of reassigning hn1 to MAC2. This is a requirement from >>> virtual appliance >>> Vendor to retain such mappings. I am wondering if there is any way >>> to do this without >>> Asking customer or manually editing any config files. > do interface arrivals show up in devd? if so they could be renamed on > arrival > I vaguely remember being able to do this some years ago but I can't > remember the details. This sounds horribly like the Linux solution, where I always have to refind eth0 and eth1 because the assignments in the devd config. Swapping a disk to another system, changes MACs and looses the devices. :( But I've been bitten so often now, that I do know where to look. Bhyve virtualisation and disk image replication is one of the cases where this comes into play. --WjW