Hi Didier,

On 9/2/22 16:36, Didier Kryn wrote:
> And, if you haven't a server like ifupdown or netplug, you're going to
> need to restart networking everytime you plug/unplug your Ethernet cable.

Well, you mean *ifplugd* or netplug..., I understand.

Try with "auto" and "allow-hotplug" together, both at once. That is:

auto eth0
allow-hotplug eth0
iface eth0 inet dhcp

With this configuration, plug/unplug events will be automatically detected.

I'll answerin detail to the rest of your post shortly, when I have time.

Cheers,

Aitor.