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Re: Create bridge for KVM on local workstation





On 14.01.2026 8:41, Nicolas Kovacs wrote:
Le 13/01/2026 à 17:15, Dan Ritter a écrit :
If you control the router/DNS/DHCP, then the best move is to
drop NetworkManager and use /etc/network/interfaces:

auto enp3s0
auto br0
iface br0 inet static
    bridge_ports enp3s0
     address 192.168.2.3
     netmask 255.255.255.0
     gateway 192.168.2.1

I tried what you suggested, and I have a weird result. It works, but I get an error message.

# ip -brief -family inet address show
lo               UNKNOWN        127.0.0.1/8
br0              UP             192.168.2.3/24

On startup there was a little hiccup with a little red error instead of a green OK. So I checked, and here it is:

# journalctl -p err
...
Jan 14 08:37:35 sandbox systemd[1]: Failed to start networking.service - Raise network interfaces.

Any idea what's causing this error message ?

Cheers,

Niki

Hi Niki,

That seems completely normal. I have checked 5 different Debian 13 installations, and they display the same with this command. Never thought about it, as everything works. Note that UNKNOWN doesn't mean that the interface is down. If the lo interface had been down, the computer probably wouldn't have been working anyway.

Best regards,

Peter

Best


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