creating an LXC within a VLAN fails

[danielo515]

Hello, and thank you for this great resource this repository and community is.

I recently tried to create an MQTT LXC using the available script and I have chosen the advanced method, and setup the network to use a VLAN. At some point the script hang up trying to connect to the LXC, and while it is true that the LXC got created, it had nothing of the expected services running or configs setup.
Is it not possible to configure an LXC to use a VLAN? Why is network connectivity required? Can not the script connect through the hypervisor?
What is the right way to create an LXC that uses certain VLAN?

Thanks!

[michelroegl-brunner]

You need to know if you need a VLAN or not. Your host needs to be set up accordingly, as well as your Network.

The network connectivity in the LXC is needed for the install. How do you think this works without a network?

I use VLANs heavily in Prod and have no issues with any script. So you need to recheck your host/network settings.

[danielo515]

Our scripts are not "setting up" anything on your network VLAN related.

When I said that?
I am reporting that the script does not work if it doesn't get network connectivity with the LXC container it creates. I opened the issue because I feel that the scripts should be able to work independently of network conditions.

Quoting myself, this are my real questions:

Why is network connectivity required? Can not the script connect through the hypervisor?

[tremor021]

So how do you expect to download anything into the LXC if there is no network connectivity?

[michelroegl-brunner]

To install any app you need a network connection. How are we supposed to install any app without downsloading it first.
Yes, you can execute bash lines from the host in a lxc, but you can not move the data over out of thin air.
Please understand that you need a internet connection in your LXC, otherwise you will not be able to use them. There is no way around that restriction. If that dose not work for you, you sadly will not be able to use our scripts.

[danielo515]

Ok, there is a misunderstanding here, please let me clarify.
This is the key part in my original message:

At some point the script hang up trying to connect to the LXC
So the LXC has internet connectivity, it has network. What fails is the connection between the script and the LXC after creating the LXC. I assumed it tried to connect to the LXC through SSH or something like that, and that is the core of my question. Not that the LXC has internet access, that is for granted, it's the connectivity between the proxmox host and the LXC.

Hope I'm explaining myself better

[tremor021]

No script doesnt connect to LXC via SSH. Script attaches to LXCs init namespace from the host. It doesn't need network to do so.
Also, this is all theoretical talk, we need to see the logs to figure out what and where it had issues.

Paste in the console log

[danielo515]

Fair point, I will create another one with a VLAN and paste the logs directly. The reason I didn't started with the logs to begin with is that I only noticed the problem after I closed the install console/shell and the LXC was already created

…

On Fri, Nov 28, 2025 at 8:50 AM Slaviša Arežina ***@***.***> wrote: No script doesnt connect to LXC via SSH. Script attaches to LXCs init namespace from the host. It doesn't need network to do so. Also, this is all theoretical talk, we need to see the logs to figure out what and where it had issues. Paste in the console log — Reply to this email directly, view it on GitHub <#9453 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AARKJWJQBOPNJSWAFVKMNU33675EFAVCNFSM6AAAAACNHNET7CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKMJQGMZDEMI> . You are receiving this because you authored the thread.Message ID: <community-scripts/ProxmoxVE/repo-discussions/9453/comments/15103221@ github.com>

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