From owner-freebsd-questions@FreeBSD.ORG Wed Dec 1 14:15:31 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 48D021065693 for ; Wed, 1 Dec 2010 14:15:31 +0000 (UTC) (envelope-from bjmccann@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id EAE978FC0A for ; Wed, 1 Dec 2010 14:15:30 +0000 (UTC) Received: by qwj9 with SMTP id 9so1616108qwj.13 for ; Wed, 01 Dec 2010 06:15:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=5bYLzUw73iZG30/6Xz4T5ophG6ZOr0MhdDsXpJoI2nc=; b=hkinAk4JdSldMXSB2RyB1KMmiG4dNE2f5L5bPI+jaulZ4cw4IakKnaW9K+U5XdZ9Ua iQXG3T3xESAeLNLyojdumuBe0TKmC8WI6vmYW7+aoxQnnT5MQQbyGW7njrkH3t8bg01x mUc/tfqg5S+fiB1sOkeqmXhMJ2uY4tikYc0Q8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=K9YChDCWL1yaAfZlzKruEoH3l8uRo9WyD002FfkZtD/s4T3DfVSMIgn25CoTlc6Mq6 QTvF8u7JiibXBMjsHmENmg6SIe1GKU2n540FxVsHeZTTfFhuqZioVdt3ZxxFn+Tnc4Pg vbUqNWji93obDtvTOBBDxIAxlebMc4gS/Pw1Q= MIME-Version: 1.0 Received: by 10.224.198.5 with SMTP id em5mr8774qab.335.1291212930339; Wed, 01 Dec 2010 06:15:30 -0800 (PST) Received: by 10.220.178.197 with HTTP; Wed, 1 Dec 2010 06:15:30 -0800 (PST) In-Reply-To: References: Date: Wed, 1 Dec 2010 09:15:30 -0500 Message-ID: From: Brian McCann To: freebsd-questions Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: /etc/rc.d/netif & em interfaces X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Dec 2010 14:15:31 -0000 On Wed, Dec 1, 2010 at 8:42 AM, Brian McCann wrote: > I'm having an interesting problem on a fresh 8.1-RELEASE1 install. > I'll start by saying this didn't happen on 7.1 on the same exact > machine. =A0I've been fighting with this for 2 days now and have come up > with no answers on my own, so I'm hoping one of you guys can have some > insight here. > > When I run "/etc/rc.d/netif restart" (also happens with a stop / > start) , I can no longer get to the server over the network. =A0When I > do a packet capture on my workstation, it looks like it's MAC address > changed somehow. =A0The first two bytes of the address are different. > For example, the real MAC is 00:15:17:1b:cf:7a , but I'll see the > replies from a MAC of =A0"02:67:17:1b:cf:7a". =A0After each run of > "/etc/rc.d/netif restart", the first two bytes will change again. =A0I > have to reboot the server to get it working again. =A0The "em" cards in > question are: > > dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.0.5 > dev.em.0.%pnpinfo: vendor=3D0x8086 device=3D0x108c subvendor=3D0x8086 > subdevice=3D0x348d class=3D0x020000 > dev.em.1.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.1 > dev.em.1.%pnpinfo: vendor=3D0x8086 device=3D0x1076 subvendor=3D0x8086 > subdevice=3D0x348d class=3D0x020000 > > FWIW, this is on an Intel 1530 series server. > > Thanks in advance, > --Brian I botched the problem description slightly. In the packet capture on the workstation, the server's MAC is always correct. The response (SYN/ACK packet) from the server is destined to the wrong MAC address. The first two bytes are wrong somehow. The arp table on the server is correct. If I run "arp -ad", the problem remains. I've also produced this problem by doing "ifconfig em1 down" then "ifconfig em1 up". To make this problem even stranger, I can make a connection from the server to a workstation without issue. It appears to only be incoming connections. Thanks again, --Brian --=20 _-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_-=3D-_ Brian McCann "I don't have to take this abuse from you -- I've got hundreds of people waiting to abuse me." =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 -- Bill Murray, "Ghostbusters"