Ethernet Disconnects on Boot

[ndon]

Hello

I am having an issue with proxmox where my ethernet disconnects and requires manual activation. When I boot the server, the ethernet is not visible via 'ip a' but is visible when I disconnect and then reconnect the ethernet cord.

Once the internet is visible I can get the connection working again via

ip link set <Ethernet> up
systemctl restart networking.services

Proxmox was setup with the ethernet connection from boot and the connectivity works fine once I've manually fixed it. I have the ethernet port set to 'autostart' via the GUI on my main computer.

Any ideas where the problem may come from/how to fix? I think this issue extends into my VMs because when I create them they do not work with the vmbr0 default network configurations and so I cannot connect them to the internet.

 

[UdoB]

Any ideas

No, sorry. You gave us zero actual configuration info... :-(

(Re-) start by posting the output of cat /etc/network/interfaces and ip add show after boot and repeat the last one after you did your magic restart...

 

[ndon]

The issue was mostly resolved by reinstalling and rebooting the machine. I am making a separate post that may have contributed to this issue where my router is not assigning DHCP to the VMs created.