Sure,
1 - what is the error? (error message ?)
/etc/init.d/networking restart
following error message is displaying
Quote
/etc/init.d/networking restart is deprecated because it may not enable again some interfaces
resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything
resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything
resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything
2 - Do you face any error if you don't try to restart network?
I'm not facing any trouble without giving any command,but I give above command,error is getting,once error is getting I'm unable to access the internet.
3 - why is your external interface configured to use itself as default gateway
I've changed eth0 configuration, current configuration is
iface eth0 inet static
address 192.168.1.12
netmask 255.255.255.0
broadcast 192.168.1.255
gateway 192.168.1.1
Thanks