I used to use the commands below a lot:

$ sudo service networking restart

But it fails giving the following output

stop: Job failed while stopping
start: Job is already running: networking


After some googling , seems like we need to restart network-manager instead.

$ sudo service network-manager restart

I’m trying to bridge an LXC container to my home LAN but i kept screwing my /etc/network/interface and had to restart my laptop each time.