netdev - Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when losing link

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Message-ID: <AANLkTi=DPaxVLzasA_xs0rPQGBFtfbS7aThx54OT798H@mail.gmail.com>
Date:	Tue, 26 Oct 2010 10:50:20 -0700
From:	Lorenzo Colitti <lorenzo@...gle.com>
To:	David Miller <davem@...emloft.net>
Cc:	brian.haley@...com, shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when
 losing link

On Tue, Oct 26, 2010 at 10:47 AM, David Miller <davem@...emloft.net> wrote:
> Why would you do this when there are link layer indications that
> we are attached to a different network?

Are there? For wifi you could look at the SSID (though even that is no
guarantee - for example enterprise networks commonly use just a few
SSIDs, but have different IP address ranges on a per-controller or
per-radio basis). But what about wired? Remember, the same thing
happens when you unplug your laptop's ethernet port and plug it in to
another network.
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