How is the Ethernet MAC address for usb0 defined?
Dr. H. Nikolaus Schaller
hns at computer.org
Tue Aug 7 23:32:06 CEST 2007
>
> This isn't a kernel problem - or at least it doesn't require a
> kernel fix.
That is good news!
> The usb driver's mac address can be set from userland, like so:
>
> ifconfig usb0 down
> ifconfig usb0 hw ether 45:23:ED:23:98:34
I tried the same on the Sharp Zaurus (the OpenMoko is currently dead
because
of the battery charging issues).
The Zaurus appears to permanently (re)set it to 40:00:01:00:00:01
each time the
USB cable is plugged into the host. Having this reset is a good
approach...
But this explains the trouble I had some time ago when I tried to
connect two
Zaurus devices to the same host... Both share the same MAC address :-)
> Setting it to match the BT address (or the BT address plus one,
> which is
> what I'd more likely expect; all my computers with multiple on-
> board ethernet
> cards use consecutive mac addresses for each card) is fairly
> trivial *except*
> that to get the BT mac address you have to load the BT modules and
> turn BT on,
> so you'd be better off setting up a routine that does that if
> necessary but
> then saves the new MAC address to disk and uses that disk cached
> value in the
> future. It can all be done with a little bit of shell scripting on
> boot.
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