Indicates the 48 bits destination MAC address. The packet's
destination address is AND-ed with the value of
caqMacAceDestMacMask and then compared against the value of
this object. If this object value is 00-00-00-00-00-00, and the
value of caqMacAceDestMacMask object in the same entry is
ff-ff-ff-ff-ff-ff, this entry matches any destionation Mac
address.