netdev - Re: Bug? TCP shutdown behaviour when deleting local IP addresses

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Message-ID: <m27gqmry4k.fsf@firstfloor.org>
Date:	Fri, 19 Oct 2012 13:43:39 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Chris Friesen <chris.friesen@...band.com>,
	netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Patrick McHardy <kaber@...sh.net>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: Re: Bug?  TCP shutdown behaviour when deleting local IP addresses

Eric Dumazet <eric.dumazet@...il.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@...ux.intel.com -- Speaking for myself only
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