how to solve networking starting problem?

I am using Ubuntu OS. I need ip address so i going to configure the interfaces /etc/network/interface. after i am restarting network service cannot restarting so please help me.

i got error message: service networking restart stop: Unknown instance: networking stop/waiting

service networking restart stop: Unknown instance: start: Rejected send message, 1 matched rules; type="method_call", sender=":1.74" (uid=1000 pid=6765 comm="start networking ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")

i am searching ERROR in syslog file failed to allocate link cache: (-10) Operation not supported

[1420435698.747037] [nm-device-ethernet.c:456] real_update_permanent_hw_address(): (eth1): unable to read permanent MAC address (error 0)