Make sure the user has provided a scope for multicast and link local
addresses used locally by a UDP bearer.
Signed-off-by: NRichard Alpe <richard.alpe@ericsson.com>
Acked-by: NJon Maloy <jon.maloy@ericsson.com>
Reviewed-by: NErik Hugne <erik.hugne@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>