netdev - Re: [RFC PATCH next] ipv6: do not send RTM

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Message-Id: <20170106.153950.509531386949440475.davem@davemloft.net>
Date:   Fri, 06 Jan 2017 15:39:50 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     mahesh@...dewar.net
Cc:     netdev@...r.kernel.org, maheshb@...gle.com,
        yoshfuji@...ux-ipv6.org, kaber@...sh.net,
        hannes@...essinduktion.org
Subject: Re: [RFC PATCH next] ipv6: do not send RTM_DELADDR for tentative
 addresses

From: Mahesh Bandewar <mahesh@...dewar.net>
Date: Wed,  4 Jan 2017 15:01:01 -0800

> From: Mahesh Bandewar <maheshb@...gle.com>
> 
> RTM_NEWADDR notification is sent when IFA_F_TENTATIVE is cleared from
> the address. So if the address is added and deleted before DAD probes
> completes, the RTM_DELADDR will be sent for which there was no
> RTM_NEWADDR causing asymmetry in notification. However if the same
> logic is used while sending RTM_DELADDR notification, this asymmetry
> can be avoided.
> 
> Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>

This makes a lot of sense, applied, thanks!