[rescue] Anyone know the encoding on the older IDPROMs?

[Ethan Hawke]

Thanks Romain,

That was what may research had lead to well, seems a bit pointless on 
Suns behalf, I guess they realized that and changed to the full MAC later.

Generally I just use the internationally accepted standard of c0ffee 
when testing but I was curios for the restoration case.

Another strategy I have heard of is using the 4 codes as base64 input, 
as that will get you 3 bytes out that you can use as realistic, if 
wrong, MAC address.


Ethan


On 8/3/21 2:26 AM, Romain Dolbeau wrote:
> (2nd try, the first attempt generated a '550 5.7.1 message content
> rejected' ?!?)
>
> Le lun. 2 aoC;t 2021 C  16:09, Ethan Hawke <ehawk at ember.systems> a C)crit :
>> Does anyone have any information on how to decode the 4 digit code on
>> the old NVRAMs to a MAC address?
> IIRC, some years ago, someone explained (here? somewhere else
> Sun-related?) that there was an internal database at Sun and that
> there was no documented way to reconstruct the hostid/mac from just
> the 4-characters label/barcode.
>
>> For example I have an IPX with code SBZ9 on the NVRAM, based on the logs
> At this stage, as long as there is no MAC conflict on the LAN, it
> probably doesn't matter much which MAC/hostid you set it to :-)
> A reasonable bet is whichever one is oldest in the log if you want an
> 'original' one.
>
> Otherwise if you only have one IPX on the LAN, you could use
> 8:0:20:49:50:58 (== use IPX in ASCII) to make it easy to
> remember/spot in logs.
>
> Cordially,
>
> --
> Romain Dolbeau
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