How do i know whether my NIC works or not?

[arshad]

On Wed, 2009-12-30 at 09:06 +0100, Christian Schult wrote:

> 
> The two lines you showed with cat /etc/network/interfaces and i told you
> to add are not the same. Look again please.
> 
> 
> Christian
> 

My bad, its way to different.
Thank you Christian for pointing out that.
here is the new output (i still cant connect to router page)

$ sudo ifdown eth0
ifdown: interface eth0 not configured
arshad at arshad-desktop:~$ sudo ifup eth0
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:e0:4d:af:6e:4f
Sending on   LPF/eth0/00:e0:4d:af:6e:4f
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
arshad at arshad-desktop:~$ dhclient
There is already a pid file /var/run/dhclient.pid with pid 5066
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

can't create /var/lib/dhcp3/dhclient.leases: Permission denied
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
Open a socket for LPF: Operation not permitted
arshad at arshad-desktop:~$ sudo dhclient
There is already a pid file /var/run/dhclient.pid with pid 5066
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/pan0/4a:50:8d:30:6c:ca
Sending on   LPF/pan0/4a:50:8d:30:6c:ca
Listening on LPF/usb0/02:80:37:14:03:00
Sending on   LPF/usb0/02:80:37:14:03:00
Listening on LPF/eth0/00:e0:4d:af:6e:4f
Sending on   LPF/eth0/00:e0:4d:af:6e:4f
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on usb0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on pan0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.