netdev - Re: [PATCH net v3] net: ipv6: allow explicitly choosing optimistic addresses

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Message-ID: <CAKD1Yr0EaSzdoK7xicwSWaJzF6Rii76D_9YBugGMyUTcQdOGDg@mail.gmail.com>
Date:	Wed, 4 Feb 2015 20:05:32 +0900
From:	Lorenzo Colitti <lorenzo@...gle.com>
To:	Erik Kline <ek@...gle.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH net v3] net: ipv6: allow explicitly choosing optimistic addresses

On Wed, Feb 4, 2015 at 7:54 PM, Erik Kline <ek@...gle.com> wrote:
>                 if (flags_testing && etc) { unlock; return 1; }
>                 else break;

Oh, I see. I suppose it's possible to fail early if strict == 1, yes.
AIUI it's not possible for the same address to be assigned twice to
the same interface with different prefix lengths (unlike IPv4, which
allows this). But it's possible for the same address to be assigned to
multiple interfaces, so you can't do it if strict == 0.
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