netdev - Re: [PATCH net-next] net: ipv6: Add a sysctl to make optimistic addresses useful candidates

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Date:	Tue, 28 Oct 2014 17:19:44 +0900
From:	Lorenzo Colitti <lorenzo@...gle.com>
To:	Erik Kline <ek@...gle.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Ben Hutchings <ben@...adent.org.uk>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH net-next] net: ipv6: Add a sysctl to make optimistic
 addresses useful candidates

On Tue, Oct 28, 2014 at 4:42 PM, Erik Kline <ek@...gle.com> wrote:
>          *      Configure the address for reception. Now it is valid.
>          */
>
> -       ipv6_ifa_notify(RTM_NEWADDR, ifp);
> +       /* If optimistic DAD is in use, the notification was already sent
> +        * in addrconf_dad_begin().
> +        */
> +       if (!ipv6_use_optimistic_addr(ifp->idev))
> +               ipv6_ifa_notify(RTM_NEWADDR, ifp);

Won't this result in not sending RTM_NEWADDR messages if
use_optimistic is enabled on the interface, but the IP address that
has just completed DAD is not an optimistic address (e.g., if it's a
manually-configured address)?
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