tIPFilterParamsSourceIpMask 1.3.6.1.4.1.6527.3.1.2.21.2.1.12

If different from 0, the object tIPFilterParamsSourceIpMask specifies the IP Mask value for this policy IP Filter entry. The mask is ANDed with the received source IP address to match the tIPFilterParamsSourceIpAddr. If the value of tIPFilterParamsSourceIpMask is 0, and the value of tIPFilterParamsSrcIpFullMask is non zero then the value of tIPFilterParamsSrcIpFullMask is used as mask. If the value of tIPFilterParamsSourceIpMask is non zero, it will be equal to the mask expressed the object tIPFilterParamsSrcIpFullMask. If both tIPFilterParamsSourceIpMask and tIPFilterParamsSrcIpFullMask are set to 0, not matching is done on the source Ip address. If a value is specified for this object, then the value of the object tIPFilterParamsSrcIpFullMask will be set to reflect this same mask.