This is the destination-side counterpart to cienaCesExtAclEntryNotifSrcInetAddrType, a display-purposes duplicate of cienaCesExtAclEntryDstInetAddrType carried directly in the extended-ACL notification trap so a receiver can interpret the accompanying destination address's family without a separate table query. An admin's trap-parsing tooling needs this specifically because extended ACL entries in this MIB apparently authorize based on both source and destination network criteria, unlike the simpler source-only entries in the base ACL table, so both sides need their own address-type context in the notification. For example, a receiving management system decoding this trap uses this field to correctly parse the accompanying destination address as IPv4 or IPv6 before logging the full source-and-destination authorization event.