Network Device not active in Proxmox v6.1-7

[virt_newb]

Hi all,

I have been using Proxmox for a few months now without any issues. I have ubuntu container and Untangle firewall VM installed on it. But last night, one of the scheduled backups failed and VM was locked.

After killing the vzdump process and unlocking Untangle VM, I restarted Proxmox. But now, I can’t activate my network devices on my 2nd NIC card.

Here is my interfaces config:

root@vhost1:~# cat /etc/network/interfaces
# network interface settings; autogenerated
# Please do NOT modify this file directly, unless you know what
# you're doing.
#
# If you want to manage parts of the network configuration manually,
# please utilize the 'source' or 'source-directory' directives to do
# so.
# PVE will preserve these directives, but will NOT read its network
# configuration from sourced files, so do not attempt to move any of
# the PVE managed interfaces into external files!

auto lo
iface lo inet loopback

iface enp37s0 inet manual

iface enp16s0f0 inet manual

iface enp16s0f1 inet manual

iface enp16s0f2 inet manual

iface enp16s0f3 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.86.5/24
        gateway 192.168.86.1
        bridge-ports enp37s0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr1
iface vmbr1 inet manual
        bridge-ports enp16s0f0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr2
iface vmbr2 inet manual
        bridge-ports enp16s0f1
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr3
iface vmbr3 inet manual
        bridge-ports enp16s0f2
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr4
iface vmbr4 inet manual
        bridge-ports enp16s0f3
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

root@vhost1:~#

Same config was working until last night and all 5 NICs enp37s0, enp16s0f0/1/2/3 were being shown as “Active” in gui.

Proxmox version is
root@vhost1:~# pveversion
pve-manager/6.1-7/13e58d5e (running kernel: 5.3.18-2-pve)

Could someone please help me get the network devices to be in active state again? I can’t activate vmbr1-4 without NICs.

Thanks in advance

I realized after posting that this thread is more suited for Networking forum section. I can’t move it there though. If Mods can move it, I would appreciate that.

 

[Stoiko Ivanov]

please post the output of:
* `ip link`
* `ip addr`

maybe the devices have a different name after the reboot

 

[virt_newb]

please post the output of:
* `ip link`
* `ip addr`

maybe the devices have a different name after the reboot

Thanks for the reply! I had actually check ip link and ip addr commands earlier. Also looked at the /sys/class/net directory to make sure that the names were still correct. And they were.

Issue was something different. When I read through the syslog for the node and this is what I found.

error: ignoring interface vmbr1. Only one object with attribute 'bridge-vlan-aware yes' allowed

So, I changed the following line in "/etc/network/ifupdown2/ifupdown2.conf" file:

# By default ifupdown2 only supports a single vlan filtering bridge
# on the system. Set this flag to 1 to support multiple vlan
# filtering bridges
multiple_vlan_aware_bridge_support=1

Not entirely sure when it got changed to 0 because I was using the system continuously and I didn't do any manual updates anytime in between.

Anywho, after changing the value to '1' and rebooting, all NICs are showing up as active as well as all the linux bridges.



Thanks a lot for taking the time to debug! Appreciate that.

- virt_newb.

 

[spirit]

Thanks for the reply! I had actually check ip link and ip addr commands earlier. Also looked at the /sys/class/net directory to make sure that the names were still correct. And they were.

Issue was something different. When I read through the syslog for the node and this is what I found.

error: ignoring interface vmbr1. Only one object with attribute 'bridge-vlan-aware yes' allowed

So, I changed the following line in "/etc/network/ifupdown2/ifupdown2.conf" file:

# By default ifupdown2 only supports a single vlan filtering bridge
# on the system. Set this flag to 1 to support multiple vlan
# filtering bridges
multiple_vlan_aware_bridge_support=1

Not entirely sure when it got changed to 0 because I was using the system continuously and I didn't do any manual updates anytime in between.

Anywho, after changing the value to '1' and rebooting, all NICs are showing up as active as well as all the linux bridges.

View attachment 17936

Thanks a lot for taking the time to debug! Appreciate that.

- virt_newb.

what is you ifupdown2 version ? (dpkg -l|grep ifupdown2)

because "multiple_vlan_aware_bridge_support=1" should already set to 1.
(and maybe you are missing others options)

 

[virt_newb]

what is you ifupdown2 version ? (dpkg -l|grep ifupdown2)

because "multiple_vlan_aware_bridge_support=1" should already set to 1.
(and maybe you are missing others options)

ifupdown2 version is 1.2.5-1

How can I check the default values for all these parameters?

Maybe there is an issue with your device, can you tell me from where you bought it?, I also bought my device from ReeCoupons by using Father's day coupon, and it's working very well, I suggest you if there is an issue with your device once check there.

Do you mean where I bought my computer? I assembled it from components I bought from various online retailers like Amazon, Newegg etc.

- virt_newb

 

[spirit]

ifupdown2 version is 1.2.5-1

I think you have installed the wrong package from debian repository, and not proxmox repository.
from proxmox 6.1, it should be ifupdpwn2 2.X or 3.X in very last updated.

That's why you have wrong config file.

Are you sure to have configured the proxmox no subscription repository ?
https://pve.proxmox.com/wiki/Package_Repositories