From owner-freebsd-current@FreeBSD.ORG Thu Oct 20 20:49:55 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7033B16A41F for ; Thu, 20 Oct 2005 20:49:55 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from mv.twc.weather.com (mv.twc.weather.com [65.212.71.225]) by mx1.FreeBSD.org (Postfix) with ESMTP id C437243D5A for ; Thu, 20 Oct 2005 20:49:53 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from [10.50.41.234] (Not Verified[10.50.41.234]) by mv.twc.weather.com with NetIQ MailMarshal (v6, 0, 3, 8) id ; Thu, 20 Oct 2005 17:06:26 -0400 From: John Baldwin To: Anish Mistry Date: Thu, 20 Oct 2005 16:51:21 -0400 User-Agent: KMail/1.8.2 References: <41473.192.216.27.32.1129818223.squirrel@192.216.27.32> <200510201115.21750.jhb@freebsd.org> <200510201427.53315.mistry.7@osu.edu> In-Reply-To: <200510201427.53315.mistry.7@osu.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200510201651.22346.jhb@freebsd.org> Cc: Tom McLaughlin , freebsd-current@freebsd.org Subject: Re: kern/87506 : [PATCH] Fix alias support on vr interfaces X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Oct 2005 20:49:55 -0000 On Thursday 20 October 2005 02:27 pm, Anish Mistry wrote: > On Thursday 20 October 2005 11:15 am, John Baldwin wrote: > > On Thursday 20 October 2005 10:23 am, Tom McLaughlin wrote: > > > Hi, would someone be available to look at kern PR 87506? I found > > > the problem while building a jail on my 6.0-RC1 box. When > > > setting an alias on a vr device with ifconfig the alias address > > > replaces the initial address of the device. marcus@ took a look > > > at the problem for me and provided the patch for the vr interface > > > which I tested and it resolved the problem. Without the patch I > > > can't create a jail that is network accessible. > > > > > > Marcus also notes in the PR that the rl, sis, ti, and tl may also > > > be affected by this bug. If anyone has any other questions or > > > needs someone to test any changes to the patch just let me know. > > > I only have vr interfaces on my FreeBSD machines though. Thanks. > > > > > > Tom > > > > I'm not sure that fix is really the right fix. The patch just > > makes vr(4) ignore changes to if_flags while the driver is up. > > Probably there is a bug in vr(4)'s handling of alias addresses. I > > did just reproduce this on my laptop's rl(4) interface though. > > I'll see if I can't figure out what is happening. > > I'm also seeing this too along with the following. > > I'm not sure if this is related, but I'm seeing the following on > RELENG_6 and CURRENT, but and older RELENG_5 as of ~2 months ago > doesn't show this problem. > I'm trying to setup my workstation with a normal DHCP'd address > and an alias IP for a jail running on the system, but the alias > setting wipes out all the other addresses on the interface. > in /etc/rc.conf: > ifconfig_rl0="DHCP" > ifconfig_rl0_alias0="inet 192.168.1.10 netmask 255.255.255.255" > > I've checked the rc boot order (on RELENG_6 and CURRENT) and it seems > correct: > netif > dhclient > netif > > I narrowed it down to: > dhclient rl0 > ifconfig rl0 inet 192.168.1.11 netmask 0xffffffff alias > [dhclient prints a message here saying connection closed and exiting] > > All of the other addresses on the card are removed. > I'm also seeing this on dc. So thinking it to be a problem in > ifconfig I copied over the version from my RELENG_5 box, and that did > the same thing...so this seems to be present several of the network > drivers in RELENG_6/CURRENT. Yes, it seems to be an issue with dhclient. If I turn dhclient off and manually configure my NIC then the alias works fine: rl0: flags=8843 mtu 1500 options=8 inet6 fe80::290:f5ff:fe0e:c8e5%rl0 prefixlen 64 scopeid 0x2 inet 10.50.41.234 netmask 0xfffffe00 broadcast 10.50.41.255 inet 10.50.41.101 netmask 0xffffffff broadcast 10.50.41.101 ether 00:90:f5:0e:c8:e5 media: Ethernet autoselect (100baseTX ) status: active -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org