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Date:      Thu, 5 Aug 2010 11:17:21 -0700
From:      "Guojun Jin" <gjin@ubicom.com>
To:        <bug-followup@FreeBSD.org>
Cc:        questions@freebsd.org
Subject:   Ifconfig (DHCP?) configures two IPs in one IF
Message-ID:  <CB2DD11991B27C4F99935E6229450D3203950C38@STORK.scenix.com>

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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



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