[PATCH] net: uclass: Save ethernet MAC address when generated

Tom Rini trini at konsulko.com
Tue Nov 16 15:18:55 CET 2021

On Thu, Nov 11, 2021 at 10:10:57AM +0100, Michael Walle wrote:
> Hi Ramon,
> Am 2021-11-09 14:55, schrieb Michael Walle:
> > Am 2021-11-04 22:00, schrieb Ramon Fried:
> > 
> > > What's the verdict ? We're keeping this patch ?
> > 
> > There was a good point from Grygorii: linux might deal
> > in its own way with missing ethernet addresses (and warn
> > the user about it because its usually an error).
> > 
> > And IMHO that net list can be fixed in a different way.
> > 
> > If this patch is accepted, it should be clearly documented
> > in the Kconfig help text. And as I said, it changes behavior.
> So this patch now in your pull request. Why are you even asking
> then?

So, to quote lib/Kconfig:
        bool "Random ethaddr if unset"
          Selecting this will allow the Ethernet interface to function
          even when the ethaddr variable for that interface is unset.
          A new MAC address will be generated on every boot and it will
          not be added to the environment.

We need either a re-spin or follow-up as we're changing the documented
behavior.  And as I mentioned in the other thread related on-going
thread, perhaps "ethmacskip" should play a role in preserving existing

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