From owner-freebsd-questions@FreeBSD.ORG  Thu Aug  5 19:19:12 2010
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 0270F1065670;
	Thu,  5 Aug 2010 19:19:12 +0000 (UTC) (envelope-from gjin@ubicom.com)
Received: from server70.appriver.com (server70b.appriver.com [74.205.4.150])
	by mx1.freebsd.org (Postfix) with ESMTP id 91E578FC15;
	Thu,  5 Aug 2010 19:19:11 +0000 (UTC)
X-Policy: GLOBAL - ubicom.com
X-Policy: GLOBAL - ubicom.com
X-Primary: gjin@ubicom.com
X-Note: This Email was scanned by AppRiver SecureTide
X-ALLOW: @ubicom.com ALLOWED
X-Virus-Scan: V-
X-Note: Spam Tests Failed: 
X-Country-Path: UNITED STATES->UNITED STATES
X-Note-Sending-IP: 216.112.109.98
X-Note-Reverse-DNS: 216.112.109.98.ptr.us.xo.net
X-Note-WHTLIST: gjin@ubicom.com
X-Note: User Rule Hits: 
X-Note: Global Rule Hits: G202 G203 G204 G205 G209 G210 G221 G309 
X-Note: Encrypt Rule Hits: 
X-Note: Mail Class: ALLOWEDSENDER
X-Note: Headers Injected
Received: from [216.112.109.98] (HELO stork.scenix.com)
	by server70.appriver.com (CommuniGate Pro SMTP 5.3.7)
	with ESMTP id 138164469; Thu, 05 Aug 2010 14:19:20 -0400
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Date: Thu, 5 Aug 2010 11:17:21 -0700
Message-ID: <CB2DD11991B27C4F99935E6229450D3203950C38@STORK.scenix.com>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: Ifconfig (DHCP?) configures two IPs in one IF
Thread-Index: Acs0ynInpd+/WxTZRAGPmP9LwLLFdg==
From: "Guojun Jin" <gjin@ubicom.com>
To: <bug-followup@FreeBSD.org>
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Cc: questions@freebsd.org
Subject: Ifconfig (DHCP?) configures two IPs in one IF
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 05 Aug 2010 19:19:12 -0000


This problem comes  in 8.1-R. I have seen it before and  thought I filed =
a report but cannot find it.
I found one (bin/21292) for ifconfig, but it was for two NICs with a =
same IP. Now is a reversed case
One NIC has two IPs.

Here is the description:

Due to DHCP server down, I manually configured rl0 to 192.168.0.10 for =
temporarily use.
In the middle of working, DHCP came back and assigned  another IP on the =
rl0, now NIC is down
due to two conflict IP addresses.

rl0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu =
1500
        options=3D8<VLAN_MTU>
        ether 00:40:f4:d1:23:9a
        inet 192.168.0.10 netmask 0xffffff00 broadcast 192.168.0.255
        inet 10.10.50.126 netmask 0xffffff00 broadcast 10.10.50.255
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
plip0: flags=3D8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500


I tried unplumb/delete rl0, but if does not  work.
Before the bug can be fixed, is any way to fix the IP without rebooting =
the machine?

-Jin