linux-kernel - Re: [PATCH net-next] ipv4: enable route flushing in network namespaces

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Message-Id: <20190628.143451.2154118272310072917.davem@davemloft.net>
Date:   Fri, 28 Jun 2019 14:34:51 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     christian@...uner.io
Cc:     kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] ipv4: enable route flushing in network
 namespaces

From: Christian Brauner <christian@...uner.io>
Date: Mon, 24 Jun 2019 15:29:23 +0200

> Tools such as vpnc try to flush routes when run inside network
> namespaces by writing 1 into /proc/sys/net/ipv4/route/flush. This
> currently does not work because flush is not enabled in non-initial
> network namespaces.
> Since routes are per network namespace it is safe to enable
> /proc/sys/net/ipv4/route/flush in there.
> 
> Link: https://github.com/lxc/lxd/issues/4257
> Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>

Applied.