SUMMARY: Lost hostid and MAC address

I said:
> I have the following output while trying to boot a Sparc 10 machine:
> -----------------------------------------------------------------------
>  ...
> (lots of test outputs, which seem to turn out OK)
> ...
>
> Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 300MHz), No Keyboard
> OpenBoot 3.27, 128 MB (60 ns) memory installed, Serial #16777215.
> Ethernet address ff:ff:ff:ff:ff:ff, Host ID: ffffffff.
>
>
>     The IDPROM contents are invalid
>
>   Boot device: net  File and args:
> Internal loopback test -- Did not receive expected loopback packet.
> Evaluating: boot
>
> Can't open boot device
>
> ok 

Thanks to all who replied.

The solution was to re-program the NVRAM, as explained in the FAQ about
NVRAM-HostId which can be found at:
 http://www.squirrel.com/sun-nvram-hostid.faq.html

The station is up and running again.

Not sure why, but it seems the temporarily berserk keyboard told the NVRAM to 
wipe itself clean.  After re-programming it, it seems to be back to normal, 
even after power-cycling (and removing the mains for some minutes).

Thanks again.

Cheers,
					Christian