From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: Bug?  TCP shutdown behaviour when deleting local IP addresses
Date: Fri, 19 Oct 2012 13:43:39 -0700
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	<1350540348.26103.1015.camel@edumazet-glaptop>
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Cc: Chris Friesen <chris.friesen@genband.com>,
	netdev <netdev@vger.kernel.org>,
	David Miller <davem@davemloft.net>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	James Morris <jmorris@namei.org>,
	Patrick McHardy <kaber@trash.net>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
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In-Reply-To: <1350540348.26103.1015.camel@edumazet-glaptop> (Eric Dumazet's
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Eric Dumazet <eric.dumazet@gmail.com> writes:
>
> I see no real problem here.
>
> Its like you cut the cable somewhere in the path.

I had a patch for this a long time ago to speed up recovery.
It was very useful with dial on demand ISDN links or DSL
connections that hang up occasionally to force a new IP.

It was in SUSE kernels for a long time, but never made it 
into mainline

http://www.firstfloor.org/pub/ak/quilt-before-arch-merge/patches/iff-dynamic

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only