netdev - Re: [PATCH 1/2] IPV6: remove addresses and routes when carrier is lost

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Message-Id: <20080604.022836.31952523.yoshfuji@linux-ipv6.org>
Date:	Wed, 04 Jun 2008 02:28:36 +0900 (JST)
From:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
To:	davem@...emloft.net
Cc:	shemminger@...tta.com, netdev@...r.kernel.org,
	yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH 1/2] IPV6: remove addresses and routes when carrier is
 lost

In article <20080603.102501.193702820.davem@...emloft.net> (at Tue, 03 Jun 2008 10:25:01 -0700 (PDT)), David Miller <davem@...emloft.net> says:

> From: Stephen Hemminger <shemminger@...tta.com>
> Date: Tue, 3 Jun 2008 10:21:44 -0700
> 
> > The patch just makes carrier_off respond the same as doing 'ip link set dev eth0 down'
> > (or ifconfig eth0 down). A router needs to be able to re-route when link fails.
> 
> But I can't see how this behavior makes sense for the normal desktop case
> and it disagrees with existing practice for many years.
> 
> If I pull out my network cable while making some adjustments in my
> rack, and then plug it back in, I don't expect to lose my static
> routes on that interface.
> 
> That doesn't make any sense at all.

How about ignoring routes via down interface?

--yoshfuji
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