Andi Kleen <andi@firstfloor.org> wrote:
quoted text
> Stefan Monnier <monnier@iro.umontreal.ca> writes:

quoted text
>> 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.
-- 
If at first you don't succeed, call it version 1.0 

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