I removed the R8125 because it repeatedly broke after reboot

[AartJansen]

Now I have the onboard Nic, but its not getting an IP, I can't even find its name, because ip addr gives 54 virtual connections, and it scrolls well off the screen
I mean it will be enp0s[something]

So is there a quick way to rerun the cloudron setup to use this ethernet as default ?

[AartJansen]

I ran nmcli to get the new interface name (enp0s31f6)

sudo ifconfig enp0s31f6 up
sudo dhclient enp0s31f6

Now it has an IP (yay).
Pretty sure it will revert to being disable / not getting DHCP after a reboot... how do I make the changes permanent ?

[BrutalBirdie]

I am sorry to be this direct, but this still the Cloudron forum where we aim to help with Cloudron related tasks.
But your issue is a basic Linux issue and not "really" Cloudron related.
But here you go: https://wiki.archlinux.org/title/Network_configuration#Network_interfaces

[girish]

Ubuntu uses netplan. See links below for some pointers:

• https://people.ubuntu.com/~slyon/netplan-docs/examples/
• https://netplan.io/faq
• https://netplan.io/design

[AartJansen]

@girish Thanks I wasn't aware of netplan.

A quick read of your links and editing the yaml file has sorted the problem for me.

As for the other comment I'm aware its a ubuntu problem, but as I only use Ubuntu for my cloudron server, I wasn't aware of netplan, or if changes to ethernet adapters would damage the configuration of all those veth for the cloudron apps. So I wanted to proceed cautiously in case something I was doing would break cloudron.

It would be pretty weird to require a platform, and refuse any assistance on the platform when issues arise. Especially so when (as per your link about systemd networking) there is so much useless information regarding generic linux help.