The set of ports to which frames received from a
specific port and destined for a specific Multicast or
Broadcast MAC address must not be forwarded, regardless
of any dynamic information, e.g., from GMRP. A port may
not be added in this set if it is already a member of the
set of ports in dot1qStaticMulticastStaticEgressPorts.
The default value of this object is a string of zeros of
appropriate length.
The value of this object MUST be retained across
reinitializations of the management system.