Disabling MULTICAST flag on an interface. Force outgoing multicast traffic to a specific interface

[Luca Di Gregorio]

Hi,

1) does anyone know if there is a way to disable MULTICAST on a single
interface?
I don't see any option in ifconfig to do this.

2) Can outgoing multicast traffic be routed to a specific interface? I
don't see any option in route. It seems that the first interface, by id, is
chosen.

Thanks, regards