netdev - Re: The mystery of optimistic ipv6 DAD handling

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Message-Id: <20120103.144813.140566667824296408.davem@davemloft.net>
Date:	Tue, 03 Jan 2012 14:48:13 -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: Tue, 3 Jan 2012 14:45:59 -0500

> Because of the above, we can compeltely ignore the manual address add path as
> far as the optimistic path is concerned.  Since we only call addrconf_prefix_rcv
> (where we add the SLAAC address), from ndisc_router_discovery (where we receive
> the new router advertisement, and parse its options), I think we can just
> augment addrconf_prefix_rcv with an extra parameter (a bool flag), which is set
> or cleared based on the value of the ND_OPT_SOURCE_LL_ADDR option in the ndopts
> array.  addrconf_prefix_rcv can use that flag to set or clear the optimistic
> flag.
> 
> Thoughts?

Sounds perfect, thanks Neil.
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