On Sat, 27 Mar 2021 17:28:37 +1030
dvalin@??? wrote:

> On 26.03.21 06:54, Patrick Bartek wrote:
> > On Fri, 26 Mar 2021 15:49:13 +1030

> > Have your tried juat rebooting with the ethernet cable plugged
> > in?
>
> I probably should have, but on finding no mention of eth0 in the /etc
> files, I reinstalled Beowulf with the cable plugged in. It was so
> quick
> compared to the old days, that am dazed that it's all there. Then
> networking just worked ... even though there was still no mention of
> eth0.
> I hadn't been asked for an ethernet address or subnet mask - it was
> all
> magic.

Probably that is just dhcp.
If you want to see current settings

sudo ifconfig (old command)

Someone might post the 'new' command

If you want to set permanent parameters, just edit
/etc/network/interfaces.