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    SubjectRe: [PATCH 0/4][RFC] netns: sysfs: add a netns suffix to net device sysfs entries
    On Wed, Oct 22, 2008 at 02:08:26PM -0700, Eric W. Biederman wrote:
    > 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.

    Ah, ok, I really don't think I want to know more :)

    > 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.

    Oh, good point.

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

    That's not a good thing to do, if udev can't see them, than HAL can't
    see them, then the rest of userspace usually has no idea they are
    present either.

    thanks,

    greg k-h


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