This object specifies the bits in an 802 source MAC address that should be considered when performing a 802 MAC SA comparison against the address specified in the ntnQosUserPolicySrcMacAddr object. The value of this object represents a mask that is logically and'ed with the 802 MAC SA in received frames to derive the value to be compared against the ntnQosUserPolicySrcMacAddr address. A zero bit in the mask thus means that the corresponding bit in the address always matches. The ntnQosUserPolicySrcMacAddr value must also be masked using this value prior to any comparisons. The length of this object in bytes must equal the length in bytes of the ntnQosUserPolicySrcMacAddr. Note that a mask with no bits set (i.e., all zeroes) effectively wildcards the ntnQosUserPolicySrcMacAddr object.