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From: ebiederm@xmission.com (Eric W. Biederman)
To: Greg KH <gregkh@suse.de>
Cc: Benjamin Thery <benjamin.thery@bull.net>,
	netdev <netdev@vger.kernel.org>,
	Dave Miller <davem@davemloft.net>,
	Al Viro <viro@ftp.linux.org.uk>, Serge Hallyn <serue@us.ibm.com>,
	Daniel Lezcano <dlezcano@fr.ibm.com>,
	linux-kernel@vger.kernel.org, Tejun Heo <htejun@gmail.com>,
	Denis Lunev <den@openvz.org>,
	Linux Containers <containers@lists.linux-foundation.org>
Subject: Re: [PATCH 0/4][RFC] netns: sysfs: add a netns suffix to net device sysfs entries
Date: Wed, 22 Oct 2008 14:08:26 -0700	[thread overview]
Message-ID: <m17i80l4mt.fsf@frodo.ebiederm.org> (raw)
In-Reply-To: <20081022201601.GC24959@suse.de> (Greg KH's message of "Wed, 22 Oct 2008 13:16:01 -0700")

Greg KH <gregkh@suse.de> writes:

> On Wed, Oct 22, 2008 at 05:21:44PM +0200, Benjamin Thery wrote:
>> Network devices from sub-network namespaces appear in sysfs
>> with a name that looks like this: device_name@netns_id
>> eg: lo@3, eth0@4e
>
> How does the default udev rules as shipped by most distros handle the
> renaming of the network device if the MAC address is duplicated like it
> will be for these eth devices?

The mac address is not duplicated.

Further devices like eth0@4e are completely unusable to the udev
rules in the initial network namespace because they can not talk
to or affect them.

As I read it Ben's ``solution'' puts entries in sysfs that are
completely unusable to udev.

Eric


  reply	other threads:[~2008-10-22 21:14 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-22 15:21 Benjamin Thery
2008-10-22 15:21 ` [PATCH 1/4] netns: add in ida ID to identify the network namespace Benjamin Thery
2008-10-22 15:22 ` [PATCH 2/4] netns: Export nets id to /proc/net/netns Benjamin Thery
2008-10-22 15:22 ` [PATCH 3/4] net: cleanup some vars names to be more consistant with the network code Benjamin Thery
2008-10-22 15:22 ` [PATCH 4/4] netns: sysfs: add netns suffix to net devices sysfs entries Benjamin Thery
2008-10-22 19:59 ` [PATCH 0/4][RFC] netns: sysfs: add a netns suffix to net device " Eric W. Biederman
2008-10-22 20:30   ` Serge E. Hallyn
2008-10-22 21:01     ` Eric W. Biederman
2008-10-22 21:55       ` Stephen Hemminger
2008-10-22 22:54         ` Eric W. Biederman
2008-10-23  4:14           ` Kyle Moffett
2008-10-23 11:56   ` Benjamin Thery
2008-10-23 15:46     ` Eric W. Biederman
2008-10-22 20:16 ` Greg KH
2008-10-22 21:08   ` Eric W. Biederman [this message]
2008-10-22 21:24     ` Greg KH
2008-10-22 20:32 ` [PATCH] netns: Coexist with the sysfs limitations Eric W. Biederman
2008-10-22 20:40   ` Daniel Lezcano
2008-10-22 21:21   ` Serge E. Hallyn
2008-10-23  8:04     ` Benjamin Thery
2008-10-23 15:40       ` Eric W. Biederman
2008-10-23 15:56       ` [PATCH] netns: Coexist with the sysfs limitations v2 Eric W. Biederman
2008-10-27 19:41         ` David Miller
2008-10-27 20:19           ` Eric W. Biederman
2008-10-28  0:50             ` David Miller

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