netdev - Re: question on random MAC in usbnet

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Message-ID: <a384af65-7fc0-4af8-9c86-b838994437c4@suse.com>
Date: Mon, 20 Nov 2023 12:06:55 +0100
From: Oliver Neukum <oneukum@...e.com>
To: David Laight <David.Laight@...LAB.COM>, 'Bjørn Mork'
 <bjorn@...k.no>, Oliver Neukum <oneukum@...e.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 USB list <linux-usb@...r.kernel.org>
Subject: Re: question on random MAC in usbnet

On 19.11.23 12:09, David Laight wrote:

> It might cause grief when a USB device 'bounces' [1].
> At the moment it will pick up the same 'random' MAC address.
> But afterwards it will change.
> 
> So you might want to save the MAC on device removal and
> re-use it on the next insert.

That means that the MAC a device would get depends on the
sequence of plugs and unplugs. That seems ... interesting.

	Regards
		Oliver