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Date:	Wed, 28 Dec 2011 14:38:12 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	nhorman@...driver.com
Cc:	netdev@...r.kernel.org
Subject: Re: The mystery of optimistic ipv6 DAD handling

From: Neil Horman <nhorman@...driver.com>
Date: Wed, 28 Dec 2011 14:21:50 -0500

> Clearly I misread the RFC the first time through and the test as it existed is
> incorrect.  I'm wondering though if what we need is a way to lookup if we've
> received a RA on the interface, and check to see if it has a source link layer
> option attached to it.

Yes, we could implement this with a new neigh lookup routine, that allows
keying on device pointer and flags.

So in this case we'd pass the device and NTF_ROUTER.  If the lookup returns
non-NULL then we've seen an RA with SLLAO specified.
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