This object specifies the type of media for which this
special filter entry applies. The value of this object
is a bit encoding which allows for multiple medias to
share the same filter. The bit numbers are defined as
follows, note that bit 0 is considered to be least significant:
ethernet - bit 0
Token Ring - bit 1
FDDI - bit 2
There for a filter that was enabled for both FDDI and
ethernet would have a value of 5.