share internet connection on 1st ethernet port to device connected to 2nd ethernet po

[dwater]

The only instructions I can find are to share the internet connection on my ethernet connection via wifi (which I am also doing); but my Mac Mini doesn't like the hotspot created by ubuntu on my laptop, so I am now trying to connect it via a 2nd ethernet connection.

Are there any instructions for doing that?

Ubuntu 19.10 on a ThinkpPad T480s

[CelticWarrior]

Ubuntu 19.10 on a ThinkpPad T480s

This is the first problem you need to address: Ubuntu 19.10 is EoL. Please upgrade t o a supported release before anything else.

[dwater]

This is the first problem you need to address: Ubuntu 19.10 is EoL. Please upgrade t o a supported release before anything else.[/COLOR][/INDENT]

[/COLOR]

Ooh, you seem to be implying that the new version will have a facility for this. Is that correct?

[CelticWarrior]

No, I'm not.

What I'm saying is that you or anybody else shouldn't​ use an End of Life release.

[SeijiSensei]

Please post the results of the commands

sudo iptables -L -nv
sudo iptables -t nat -L -nv

Wrap the results in [code][/code] tags for legibility.