Hello!
> Ok, but even in this case there is minor problem. And it lies in
> net/ethernet/eth.c - eth_header.
You have just made great discovery. :-)
It was big puzzle why people blame that they see packets with zero MAC,
sometimes. Apparently, this happens on the first packet, when hh cache
is still not created. :-)
> Please comment on this patch :) :
I am not sure that this is right. Protocols using neighbour cache
will work, but anothers will fail on NOARP devices.
It is safer just to reorder two ifs, checking for daddr!=NULL first.
Alexey
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