From: "Victor Mataré" <matare@lih.rwth-aachen.de>
To: David Miller <davem@davemloft.net>
Cc: akpm@linux-foundation.org, netdev@vger.kernel.org,
bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org
Subject: Re: [Bugme-new] [Bug 35862] New: arp requests from wrong src IP
Date: Thu, 26 May 2011 04:00:22 +0200 [thread overview]
Message-ID: <201105260400.22814.matare@lih.rwth-aachen.de> (raw)
In-Reply-To: <20110525.215222.22117057747103565.davem@davemloft.net>
On Thursday, 26.05.2011 03:52:22 David Miller wrote:
> From: Andrew Morton <akpm@linux-foundation.org>
> Date: Wed, 25 May 2011 16:31:37 -0700
>
> >> I switched a host's ip address from 137.226.164.13 to 137.226.164.2. The .13 IP
> >> now belongs to the host that had .2 before (I swapped them). Now both hosts
> >> still arp from their old IPs although ifconfig as well as ip clearly tell
> >> otherwise. Examining the host which now has 137.226.164.13:
> >>
> >> # ip addr show dev eth0
> >> 4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
> >> link/ether 00:e0:81:41:1f:e4 brd ff:ff:ff:ff:ff:ff
> >> inet 137.226.164.2/24 brd 137.226.164.255 scope global eth0
> >> inet 192.168.23.2/24 brd 137.226.164.255 scope global eth0:0
>
> If you keep the old IP address around it remains as the "primary"
> IP address.
>
> You have to explicitly remove the original IP address from the
> interface first, then add the new one, in order for the new
> one to become the "primary"
>
> Not a bug, please close this.
>
Sorry, there's a typo. It's supposed to read:
[...]
Examining the host which now has 137.226.164.2 (used to have 137.226.164.13):
# ip addr show dev eth0
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:e0:81:41:1f:e4 brd ff:ff:ff:ff:ff:ff
inet 137.226.164.2/24 brd 137.226.164.255 scope global eth0
inet 192.168.23.2/24 brd 137.226.164.255 scope global eth0:0
[...]
Sorry, got confused with all the swapping. I'm *not* keeping the old address around, it's completely *gone*, from both ifconfig and ip. But still it's being used as arp src address. That's what this bug is about. Sorry for the confusion.
next prev parent reply other threads:[~2011-05-26 2:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-35862-10286@https.bugzilla.kernel.org/>
2011-05-25 23:31 ` [Bugme-new] [Bug 35862] New: arp requests from wrong src IP Andrew Morton
2011-05-26 1:52 ` David Miller
2011-05-26 2:00 ` Victor Mataré [this message]
2011-05-27 5:27 ` Julian Anastasov
2011-05-27 23:58 ` Victor Mataré
2011-05-28 19:10 ` Julian Anastasov
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