netdev - Re: question on random MAC in usbnet

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Message-ID: <a0cd7abe-581e-460a-a36b-7665749417a2@suse.com>
Date: Thu, 16 Nov 2023 13:32:52 +0100
From: Oliver Neukum <oneukum@...e.com>
To: 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 16.11.23 12:31, Bjørn Mork wrote:
> Oliver Neukum <oneukum@...e.com> writes:

> A host using more than one usbnet device was also unlikely 20 years
> ago.  So host unique was good enough in any case.
> 
> These factors have change a lot since then, obviously.

Yes.
   
> I could be wrong, but I don't expect anything to break if we did that.
> The current static address comes from eth_random_addr() in any case, so
> the end result as seen from the mini drivers should be identical.  The
> difference will be seen in userspace and surrounding equipment, And
> those should be for the better.

In theory somebody might have a setup with multiple devices on the same
bus and using them getting the same MAC for seamless fallover.

	Regards
		Oliver