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Message-ID: <295c0613-7ffd-5dfa-5ee3-aa5409445d92@cumulusnetworks.com>
Date:   Wed, 29 Mar 2017 08:13:19 -0600
From:   David Ahern <dsa@...ulusnetworks.com>
To:     nicolas.dichtel@...nd.com, David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/7] netconf: Add support for RTM_DELNETCONF

On 3/29/17 3:36 AM, Nicolas Dichtel wrote:
> Le 29/03/2017 à 07:32, David Miller a écrit :
>> From: David Ahern <dsa@...ulusnetworks.com>
>> Date: Tue, 28 Mar 2017 14:28:00 -0700
>>
>>> netconf notifications are sent as devices register but not when they
>>> are deleted leaving userspace caches out of sync. Add support for
>>> RTM_DELNETCONF to ipv4, ipv6 and mpls.
> Not sure why those notifications are needed. When an interface is set down, ipv4
> route deletion are not notified. Why is it needed for netconf?
> 

We carry a patch to send notifications for route deletes. In general, it
makes management of libnl caches much easier when delete notifications
are sent for each type. Without it, a link delete requires walking the
other caches removing objects.

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