[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?

Thanks for reading,

bob prohaska

--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)

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

--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)

On Wed, 30 Oct 2024 21:22:31 +0000, druck wrote:

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.

Which ends up being somewhat longer, like “wlp5s0”.

--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)