[BUG 2.5.67 (and probably earlier)] /proc/dev/net doesnt show all net devices

From: "Christian Bornträger" <linux@borntraeger.net>
To: acme@conectiva.com.br
Cc: linux-kernel@vger.kernel.org
Subject: [BUG 2.5.67 (and probably earlier)] /proc/dev/net doesnt show all net devices
Date: Tue, 29 Apr 2003 14:34:18 +0200	[thread overview]
Message-ID: <200304291434.18272.linux@borntraeger.net> (raw)

Summary: /proc/net/devices doesnt show all devices using cat. With dd all are 
available.

I tested a kernels prior to 
http://linus.bkbits.net:8080/linux-2.5/cset@1.797.156.3
and it doesnt seem to have this problem.

If I do a 
& cat /proc/net/dev
Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    
packets errs drop fifo colls carrier compressed
    lo:     784      10    0    0    0     0          0         0      784      
dummy0:       0       0    0    0    0     0          0         0        0       
 tunl0:       0       0    0    0    0     0          0         0        0       
  gre0:       0       0    0    0    0     0          0         0        0       
  sit0:       0       0    0    0    0     0          0         0        0       
  eth0: 1078024   19131    0    0    0     0          0         0  5696472   
  eth1:536253967 10078459    0    0    0     0          0         0 3372254868 

I get net devices till eth1, but eth2 and hsi0 are available nevertheless.
but if I do a 

& dd if=/proc/net/dev bs=4096
Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    
packets errs drop fifo colls carrier compressed
    lo:    1036      13    0    0    0     0          0         0     1036      
dummy0:       0       0    0    0    0     0          0         0        0       
 tunl0:       0       0    0    0    0     0          0         0        0       
  gre0:       0       0    0    0    0     0          0         0        0       
  sit0:       0       0    0    0    0     0          0         0        0       
  eth0: 1182386   18424    0    0    0     0          0         0 11838659   
  eth1:30499791987 20594094    0    0    0     0          0         0 
  eth2:184353121774 125264473    0    0    0     0          0         0 
  hsi0:123569282529 3827611    0    0    0     0          0         0 
0+1 records in
0+1 records out

All net devices are shown.

cheers

Christian