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I have an ubuntu 12.04-lts server running with two network cards, eth0 and eth1. When I try to restart the network, I get "Failed to up start eth0". When I do ifconfig, both network cards show different static IP. Funny thing is that I'm able to ssh into the server using eth0 IP address.

My question is why am I getting "Failed to up start eth0" message when I restart the network.

Thanks in adavnce

update

if use lshw -C class command, I get

-network:0             
       description: Ethernet interface
       product: 82576 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
....
-network:1
       description: Ethernet interface
       product: 82576 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0.1
       bus info: pci@0000:07:00.1
       logical name: eth1
....
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What does /var/log/syslog say? – EEAA Feb 5 at 3:16
Do you use network-manager ? If it is the case, you must restart the interface from it. Could you give us the command you use to restart your interface ? – Dom Feb 5 at 9:28
@Dom /etc/init.d/networking restart – getmizanur Feb 5 at 9:40
Do you use network-manager ? You can not use /etc/init.d/networking restart if it is the case, as network-manager don't use /etc/network/interfaces... – Dom Feb 5 at 10:02
@EEAA tailed syslog file while executing /etc/init.d/networking restart, i get no logs!!! i don't get this. – getmizanur Feb 5 at 10:04
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