[Networkmanager] nic sub-interface

Robin Becker robin at reportlab.com
Mon May 8 15:50:29 UTC 2023

On 08/05/2023 15:04, Thomas Haller wrote:
> Hi,
> Why? After moving the port to the bridge, the "new" configuration is
> supposed to work. Just add the IP addresses (or `ipv4.method=auto`) on
> the bridge profile, instead of the eno1 profile from before.
I am almost certain this is right, but perhaps my router is interfering.

I will try again and perhaps I need to clear my head around what's talking to what. Since the router assigns using a mac 
address perhaps I need to force the bridge and/or the nic to be more specific and just fix the addresses.

> It's not clear to me what a "sub interface eno1.1" is. Where does this
> recommendation come from?

I get this from


under "Adding a physical ethernet interface to the bridge"

On our old servers in /etc/network/interfaces we have sections like

# The primary network interface
auto eno1
iface eno1 inet static
     address yy.yy.yy.yy

auto eno1:0
iface eno1:0 inet static
         address xx.xx.xx.xx

so I assumed I could do something similar with NM and have two connections using the same physical device.

I am no networking genius though

> Thomas

Robin Becker

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