On Sun, 2 Mar 2025 at 09:12, Patrick Dupre <pdupre@gmx.com> wrote:
I set the gateway and now it works.
 
Now
1) I wish to use internet from PC A.
I guess that I need to set a name server
But not possible manually
nmcli connection modify <connection_name> ipv4.dns <dns_servers>
(From: https://idroot.us/fedora-41-network-configuration/)
 2) How do I need to set for PC 3
From PC A
From PC C
I tried several things but none works
Your life would be made a lot simpler if you had a small switch or router, as Tim suggested. You can even get USB-powered devices.

Failing that: https://superuser.com/questions/1732698/two-interfaces-on-same-machine-with-same-subnet