Subj : Re: USB enumeration changes when it shouldn't
To   : bp@www.zefox.net
From : druck
Date : Wed Oct 30 2024 21:22:31

On 30/10/2024 16:42, bp@www.zefox.net wrote:
> [continuation of wifi problems on Bookworm]
>
> In tinkering with a usb-wifi dongle on a Pi5 running Bookworm
> it appears that adding or removing the usb-wifi dongle changes
> device names in a surprising way:
>
> When booted with no dongle, the internal wifi is wlan0, as expected.
> When booted with the dongle, the internal wifi is wlan1 and the dongle
> is wlan0, a surprise.
>
> I expected that devices would be given enumeration in order of discovery.
>
> Is this behavior normal?

Yes, the usual reason for adding a WiFi dongle is to use it in
preference to the built-in interface.

If you don't want that; run raspi-config and select predictable names in
networking. Each interface will then have a consistent and unique name.

---druck

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