[SOLVED] Failed to start networking when starting

[eyen]

Hi,

I have a fresh install of Proxmox 6.1.
I have two NIC's: one on the motherboard and one 10G card. The 10G card has no network cables attached.
When I start the system, there is no networking. The two NIC's are detected, but no IP's are assigned (`ip addr`).

Simply restarting the networking service creates the vmbr0 bridge and then I get network activity.

This is the content of my /etc/network/interfaces file:

auto lo
iface lo inet loopback

iface enp5s0 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.1.67
netmask 255.255.255.0
gateway 192.168.1.254
bridge_ports enp5s0
bridge_stp off
bridge_fd 0

These are the errors from the networking and the ifupdown-pre services:

networking.service - Raise network interfaces
Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:interfaces(5)

Jan 20 13:08:36 pve systemd[1]: Dependency failed for Raise network interfaces.
Jan 20 13:08:36 pve systemd[1]: networking.service: Job networking.service/start failed with result 'dependency'.


● ifupdown-pre.service - Helper to synchronize boot up for ifupdown
Loaded: loaded (/lib/systemd/system/ifupdown-pre.service; static; vendor preset: enabled)
Active: failed (Result: exit-code) since Mon 2020-01-20 13:46:46 PST; 5min ago
Main PID: 928 (code=exited, status=1/FAILURE)

Jan 20 13:44:46 pve systemd[1]: Starting Helper to synchronize boot up for ifupdown...
Jan 20 13:46:46 pve systemd[1]: ifupdown-pre.service: Main process exited, code=exited, status=1/FAILURE
Jan 20 13:46:46 pve systemd[1]: ifupdown-pre.service: Failed with result 'exit-code'.
Jan 20 13:46:46 pve systemd[1]: Failed to start Helper to synchronize boot up for ifupdown.

What can I do to resolve this issue?


Eric

 

[eyen]

I found a similar issue here:
https://forum.proxmox.com/threads/proxmox-6-network-wont-start.56362/

Simply masking the ifupdown-pre service solved it.