Proxmox stopped connecting to Internet/home network

[cantthinkofone]

Hi Enthusiasts,

I'm pretty new to proxmox, networking, the console, etc..

I did a number of random things if found while searching the web

Im running Proxmox with Nextcloud on ubuntu server lxc.

Thank you for any hints!

• Proxmox just stopped connecting to the network after I moved it to another case.
• I didn't change any settings at all.
• checked if the network adapters are activated in bios
• the network card blinks while booting but then stops
• tried systemctl restart networking
• checked if the ip settings match my routers
• twisted the ip settings randomly, which made the nextcloud available for a secon via internet, then stopped ( nano etc/network/interfaces)
• tried to ping 8.8.8.8 -> "Destination Host Unreachable"

Since the pictures were too large to attach check my reddit post for the screenshots I took:
https://www.reddit.com/r/Proxmox/comments/gf6eto/proxmox_stopped_connecting_to_home_networkinternet/

 

[Moayad]

Hi,


As i saw in your post on reddit, you need to edit your network configuration, so just /etc/network/interfaces and modify iface enp2s0 inet manual to iface enp1s0 inet manual


then should works

 

[cantthinkofone]

Thanks a LOT Moayad!
Any simple explanation how this could have hapenned?

 

[Moayad]

Any simple explanation how this could have hapenned?

Yeah sure!
take a look here to understand why change name for interface [0]

[0] https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

I hope this helps