linux-kernel - Re: Current state of Network Namespaces (NETNS, CLONE

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Date:	Thu, 20 Nov 2008 08:54:36 +0100
From:	Daniel Lezcano <dlezcano@...ibm.com>
To:	Michael Kerrisk <mtk.manpages@...glemail.com>
CC:	Pavel Emelyanov <xemul@...nvz.org>,
	David Miller <davem@...emloft.net>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	lkml <linux-kernel@...r.kernel.org>, linux-man@...r.kernel.org,
	Subrata Modak <subrata@...ux.vnet.ibm.com>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	adobriyan@...il.com, Patrick McHardy <kaber@...sh.net>,
	den@...nvz.org
Subject: Re: Current state of Network Namespaces (NETNS, CLONE_NEWNET)?

Michael Kerrisk wrote:
> Sorry for the shotgun mail, but in the end,  it's
> not clear who can best answer my question(s).
> 
> I'm currently trying to add documentation of all of
> the undocumented CLONE_* flags.  One of these is
> CLONE_NEWNET, and I could use (quite a lot of) help.  
> 
> My questions:
> 
> What is the current state of the network namespace 
> implementation?  Is it complete?  

It is not complete but mostly usable for ipv4 and ipv6.

There is a network namespace status I filled at:

http://lxc.sourceforge.net/network/status.php

It should be up-to-date.

> What objects are considered part of the network 
> namespace, and therefore distinct for a new network 
> namespace?

The network namespace brings isolation from the layer-2 to upper layers.

> Is there any documentation for network namespaces 
> already?

http://lxc.sourceforge.net/network.php
http://lxc.sourceforge.net/doc/sigops/appcr.pdf

> Are there any test programs for network namespaces?

http://sourceforge.net/projects/lxc/

follow the README page. It is still in development but mainly usable  - 
any feedbacks are welcome :)

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