Ubuntu NetWork Service Command for Network Restart Does Not Work

/etc/init.d/networking start
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service networking start


Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the start(8) utility, e.g. start networking
networking stop/waiting
In any case either service command or using /etc/init.d/networking with restart does not do any thing.
It does not work and neither does it start. 

so, We can do this for this problem, 

sudo service network-interface restart INTERFACE=eth0