ens3: Host name lookup failure | sudo ifconfig up ens3

Question

On both the live image of Trisquel in a virtual machine:

$ sudo ifconfig up ens3
ens3: Host name lookup failure
ifconfig '--help' gives usage information

Answer 1

The command is:

ifconfig ens3 up

You have the argument, which is the device name, and the subcommand in the wrong order.

I'm not familiar with Trisquel and don't have a VM to test but as it's GNU Linux, you should also be able to use the command:

ifup ens3