Debian 13 LXC await network timeout is a real pain. The container starts, then hangs for ages waiting on the network before Proxmox gives up. Here’s the fix that worked on a stock Debian 13 container.
What’s actually going on
Proxmox waits for the container’s network to come up before it finishes the start. The wait logic checks for a link and an IP. But Debian 13’s networking stack changed how it reports readiness. So Proxmox sits there until the timeout hits—usually 30 seconds of nothing.
The error in the task log is vague: lxc start failed: command timed out. It tells you nothing about the network. You have to dig into the container’s journal to see the real problem.
The workaround that works
You can’t fix Proxmox’s wait logic without patching it. But you can make the container report ready faster. The trick is to disable the network wait entirely in the container config.
Edit the container’s config file on the Proxmox host:
nano /etc/pve/lxc/<CTID>.confAdd this line:
lxc.net.0.flags: upThat tells LXC to bring the interface up immediately without waiting for carrier or IP. The container starts, Proxmox sees the interface as up, and the timeout never triggers.
If you’re using a bridge, also add:
lxc.net.0.link: noneThat skips the link detection entirely. The container gets its IP via DHCP later, but Proxmox doesn’t care—it already moved on.
Why this happens on Debian 13
Debian 13 switched to systemd-networkd by default for containers. The old ifupdown scripts are gone. systemd-networkd takes a bit longer to bring up the interface, and Proxmox’s wait loop is too aggressive. It checks once, sees nothing, and waits for the timeout instead of retrying.
This is a stupid default. The wait loop should poll for a few seconds, not give up and hang. But that’s Proxmox for you—sometimes the easy fix is on the container side.
If you’d rather pay for this
Honestly, there’s no paid product that fixes this. It’s a config tweak. You could buy a Proxmox subscription for support, but they’d tell you the same thing: edit the config. Save your money.
Related: Debian 12 Cloud Image Search Domain Missing: Fix It in Proxmox
