Using gnome-control-center to configure two wired connections

Asked by Eric Richards on 2020-10-21

I'd like to configure two wired connections: One to the outside world via DHCP, the other shared to other computers.

When attempting this, unpredictable behavior happens: the two wired connections are conflated with each other.

Doing this with a wired connection and wireless works without problemms.

Ubuntu desktop 20.04 LTS.

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Eric Richards
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I suggest you configue the wired connection using net plan and let the GUI app manage the wired if the GUI app cannot do both. Not something I've configured using a GUI. Maybe others can advise

Bernard Stafford (bernard010) said : #2

Open Settings -> Scroll down list to Sharing -> Switch toggle ON -> Click Media Sharing on the list -> Networks switch toggle ON for Wired Network 1 -> It will show Video - Pictures - Music to share If you want more than that click the + sign to add which folder to add for sharing -> Click Open . . or X to remove from sharing list.
Would this be what you are referring to as a wired connection between other computers ?

Eric Richards (efricha) said : #3

I have since managed to horse it to work. My configuration is as follows: Wired connection to the outside world, the usual case for connecting to an ISP. The other wired network connects to embedded boxes that I'm developing on and cannot be connected to the outside world.

I played with netplan to configure both networks and almost got it to work (I didn't get the routing right), ended up setting this aside, deleteded all information using gnome-control-center, and retried from scratch. This was successful.

I don't know if this is enough information to put in as a bug report; this appears to be a rare case that doesn't get tested much.

Ubuntu 20.04.1 LTS, running gnome (Not unity) or xfce, Using gnome-control-center.

Dell G7 laptop, one port is the built in hardware ethernet, the other is a j5create USB 3.0 Gigabit Ethernet Adapter. The latter is used for the outside world.