From owner-freebsd-virtualization@freebsd.org Sat Mar 31 07:06:33 2018 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6B5C5F68A76 for ; Sat, 31 Mar 2018 07:06:33 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from kabab.cs.huji.ac.il (kabab.cs.huji.ac.il [132.65.116.210]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id F131175863; Sat, 31 Mar 2018 07:06:32 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from imac.bk.cs.huji.ac.il ([132.65.179.42]) by kabab.cs.huji.ac.il with esmtp id 1f2Aao-000HUA-QE; Sat, 31 Mar 2018 10:06:26 +0300 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.2 \(3445.5.20\)) Subject: Re: bhyve and arp problem From: Daniel Braniss In-Reply-To: <8364b0ca-1ac2-10d9-6c60-0d4057debe4b@freebsd.org> Date: Sat, 31 Mar 2018 10:06:26 +0300 Cc: freebsd-virtualization@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <6FBF3AB0-B1D1-4DFC-B4ED-88C5FAEC89FA@cs.huji.ac.il> References: <8364b0ca-1ac2-10d9-6c60-0d4057debe4b@freebsd.org> To: Allan Jude X-Mailer: Apple Mail (2.3445.5.20) X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 31 Mar 2018 07:06:33 -0000 > On 30 Mar 2018, at 18:44, Allan Jude wrote: >=20 > On 2018-03-30 07:16, Daniel Braniss wrote: >> hi, >> this is my first attempt at bhyve, and so far all seems ok, except >> in my guest, the mac address of the hosting keeps flipping, ie, every = 20 minutes >> i see a message : >> =E2=80=A6 arp: nnn (the hosting ip) moved from xxxx to yyyy >> on both the host and guest I=E2=80=99m running a very resent -stable. >> the yyyy is the mac of the host nic, while the xxxx is the tap0 >>=20 >> i know this looks harmless, but it=E2=80=99s annoying >>=20 >> danny >> _______________________________________________ >> freebsd-virtualization@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization >> To unsubscribe, send any mail to = "freebsd-virtualization-unsubscribe@freebsd.org" >>=20 >=20 > The MAC address is likely not changing. That sounds more like an IP > conflict. I think the problem starts with the host seeing the client/guest on 2 = interfaces, the nic (mlnxen0) and the tap(tap0) on the host: arp -a ... bhv-00.cs.huji.ac.il (132.65.80.246) at xx.xx.xx.xx.xx on tap0 expires = in 1001 seconds [ethernet] bhv-00.cs.huji.ac.il (132.65.80.246) at xx.xx.xx.xx.xx on mlxen0 expires = in 644 seconds [ethernet] >=20 > --=20 > Allan Jude > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to = "freebsd-virtualization-unsubscribe@freebsd.org"