The "/etc/init.d/networking restart" fails to update eth0/eth1 at my Ubuntu 14.04 LTS

Question

At my Ubuntu 14.04.1 LTS, "/etc/init.d/networking restart" doesn't seem to update eth0/eth1 interfaces. Network Manager has been turned off in last reboot and "/etc/network/interfaces" has been updated to use static IP at both eth0/eth1 interfaces plus adding static route to each. However, nothing changes after issues "/etc/init.d/networking restart" or "stop" & "start".

Answer 1

The /etc/init.d/networking restart command has been disabled in 14.04.

To restart your interfaces you have to use:

sudo ifdown eth0 && sudo ifdown eth1 && sudo ifup eth0 && sudo ifup eth1

I found an explanation for this here - https://askubuntu.com/questions/230698/how-to-restart-the-networking-service :

Restarting networking on a desktop machine will cause dbus and a bunch of service to stop and never be started again, usually leading to the whole system being unusable.

As Ubuntu does event based network bring up, there quite simply isn't a way to undo it all and redo it all, so a restart just isn't plain possible. The recommended way instead is to use ifdown and ifup on the interfaces you actually want to reconfigure

Answer 2

Modify the interfaces file and reboot the pc. Don't restart the service because it doesn't always work. Posting the config files also helps us spot any errors.