Re: number of eth0 device

From: Erik Mouw
Date: Wed Oct 19 2005 - 05:42:56 EST


On Wed, Oct 19, 2005 at 12:31:35PM +0200, Karel Kulhavy wrote:
> I am looking into Documentation/devices.txt in 2.4.25 and eth0 is not listed
> there. If I grep "eth", I get only
>
> 38 char Myricom PCI Myrinet board
> [...]
> "This device is used for status query, board control and "user level
> packet I/O." This board is also accessible as a standard networking
> "eth" device. "
>
> and then
>
> /dev/pethr0
>
> Is eth0 some kind of special device that doesn't have any number
> assigned?

Yes, there's no such thing as /dev/eth0, network interfaces have their
own namespace. Linux uses the defacto standard BSD socket interface for
networking, so blame the BSD people for violating the "everything is a
file" rule.


Erik

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+-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
| Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
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