netdev - Re: why are IPv6 addresses removed on link down

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Date:	Tue, 13 Jan 2015 18:34:02 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	David Miller <davem@...emloft.net>
Cc:	dsahern@...il.com, hideaki.yoshifuji@...aclelinux.com,
	stephen@...workplumber.org, netdev@...r.kernel.org
Subject: Re: why are IPv6 addresses removed on link down

On Di, 2015-01-13 at 12:25 -0500, David Miller wrote:
> From: David Ahern <dsahern@...il.com>
> Date: Tue, 13 Jan 2015 07:53:59 -0700
> 
> > Bottom line is there a harm in removing the flush? If there is no harm
> > will mainline kernel take a patch to do that or is your backward
> > compatibility concern enough to block it?
> 
> Backward compatibility trumps all other concerns here, and I say is
> enough to block changing the behavior.  One which we've had for more
> than a decade.

Totally agreed, a new sysctl will definitely be needed and the default
should be the old behavior. Otherwise we cannot do it.



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