If macvlan's are used, it is useful to propgate speed and other settings
from underlying device up for application usage.
Signed-off-by: NStephen Hemminger <shemminger@vyatta.com>
Acked-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>