The object tLiMacFilterParamsSrcMACMask specifies
the source MAC mask value for this LI MAC filter match entry.
The mask is ANDed with the MAC to match tLiMacFilterParamsSrcMAC.
A zero bit means ignore this bit, do not match. A one bit means
match this bit with tLiMacFilterParamsSrcMAC.
Use the value 00-00-00-00-00-00 to disable this filter criterium.
If set to all zero, the value of tLiMacFilterParamsSrcMAC will
bet set to all zero by the system, and any attept to change this
value will be ignored.