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Message-Id: <E1IhZi3-0001Hd-Ug@be1.lrz>
Date: Tue, 16 Oct 2007 01:50:55 +0200
From: Bodo Eggert <7eggert@....de>
To: Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
Stefan Monnier <monnier@....umontreal.ca>
Subject: Re: Killing a network connection
Andi Kleen <andi@...stfloor.org> wrote:
> Stefan Monnier <monnier@....umontreal.ca> writes:
>> The main use for me is to deal with dangling connections due to taking
>> network interfaces up&down with different IP addresses (typically the wlan0
>> interface where the IP is different because I've modes from an AP to
>> another). Of course, maybe there's another way to solve this particular
>> problem, in case I'd like to hear about it as well.
>
> Long ago I did a 2.4 patch that solved exactly this problem. It introduced
> a new ifconfig flag "dynamic" and when a dynamic address went down
> all TCP connections originating from it were killed. It's still available
> in older SUSE releases. I might post a forward port later.
There is a /proc/sys/net/ipv4/ip_dynaddr sysctl in 2.6.21.
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