linux-kernel - Re: [PATCH] ipv4: in new netns initialize sysctls in net.ipv4.conf.* with defaults

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Message-ID: <56CF0DC0.7030003@6wind.com>
Date:	Thu, 25 Feb 2016 15:20:48 +0100
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	David Miller <davem@...emloft.net>
Cc:	khlebnikov@...dex-team.ru, netdev@...r.kernel.org,
	containers@...ts.linux-foundation.org, vvs@...tuozzo.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv4: in new netns initialize sysctls in net.ipv4.conf.*
 with defaults

Le 24/02/2016 23:05, Eric W. Biederman a écrit :
[snip]
> In the general case the current behavior is random and not something
> applications can count on, and we would do well to fix it so it is less
> random.  In particular consider the case of an application in a
> non-initial network namespace creating a new network namespace.  It is
> not even possible to predict what values they will get for sysctls
> today.
+1

>  From a backwards compatibility standpoint we are probably better off
> with copying from the current network namespace rather than the initial
> network namespace.  As that more closely resembles the common case
> today.
+1