Contains a list of ports that are configured as allowed
SPAN destination ports.
Entry of portCopyTable with its portCopyDest can not be
created if crcSpanDstPermitListEnabled is 'true' and a
corresponding entry does not exist in the
crcSpanDstPermitListTable table. In other words the
InterfaceIndex specified by portCopyDest object from
SMON-MIB must match ifIndex of entries in this table.