Re: Define primary MAC address based on device sticker

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On Wed, Jun 26, 2019 at 03:46:03PM +0200, Adrian Schmutzler wrote:
> Hi,
> 
> > I don't have a strong opinion, so to throw out some other ideas:
> > 
> > We already have ethernetN. Perhaps just go with netN with net0 being
> > the primary device.
> 
> Note that vendors actually prefer WiFi devices (I have no
> statistics, but I assume > 50 %) for assigning them with the sticker
> MAC address. This is reasonable, as those are more exposed to the
> typical user than ethernet. Sometimes ethernet and WiFi MAC
> addresses are the same, however there are at least the three
> following cases:
> 
> - Sticker MAC address is uniquely assigned to a WiFi device (and all ethernet device addresses are different)
> - Sticker MAC address is uniquely assigned to an ethernet device (and all WiFi addresses are different)
> - Sticker MAC address is assigned both to a WiFi device and an ethernet device (in which case the choice for "primary-mac-address" would be arbitrary).
> 
> I'm just going into detail here to illustrate that one might not want to use the term "ethernet".
> For net0, net1, etc. that would then have to include both ethernet and WiFi in different order for different devices (as net0 might be ethernet or WiFi).
> 
> Partially off-topic, but FYI: Many cheap routers typically then use
> incremented addresses for the other devices despite "primary", which
> might also have negative increments (e.g. eth0: sticker, eth1:
> sticker+1, 2.4 GHz: sticker-1, 5 GHz: sticker-2). So it is
> reasonably hard to order a mixed bunch of ethernet and WiFi devices
> systematically by netX ...

Old school real-OF systems used simply "net" for the main network
adapter.  You could re-use that here as well, I think.


> 
> Best
> 
> Adrian
> 
> > 
> > Or primary-net-device?
> > 
> > >
> > > If a consensus is found, how would I go on with my proposition?
> > 
> > While I'd like to start documenting alias names, just consensus here is enough.
> > 
> > Rob



-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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