I've tried to enable auto configure network but without success.


looking to the docs I've found this sample configuration in https://www.linode.com/docs/platform/network-helper

auto lo
iface lo inet loopback

auto eth0
#allow-hotplug eth0 doesn't work
iface eth0 inet6 auto
iface eth0 inet static
address 173.255.204.231/24
gateway 173.255.204.1
up ip addr add 12.34.56.78/24 dev eth0 label eth0:1 #<= this is ok? I couldn't figure out this IP on the sample
down ip addr del 12.34.56.78/24 dev eth0 label eth0:1
up ip addr add 192.168.138.44/17 dev eth0 label eth0:2 #<= if I am right this is my Private IP
down ip addr del 192.168.138.44/17 dev eth0 label eth0:2

So, my question is ... will this work???
Thanks in advance.

The 12.34.56.78/24/eth0:1 lines in the example config are intended for bringing up a second public IP if you were assigned one. If you don't have a second public IP, you don't need them.

The 192.168.x.x/eth0:2 lines would be for your private IP, yes.