Summary
The usefulness of SLAAC in any given organization greatly depends on the tracking requirements; because SLAAC does not provide direct tracking the way a stateful DHCP server would, there is no quick way to determine which machine traffic is coming from without tracking the MAC addresses of the clients and calculating their created IPv6 address. This is further complicated by operating systems (like Windows 7) that use SLAAC data protection extensions by default, making tracking even harder, if not impossible, without looking at the addresses assigned to each device. SLAAC isn’t without a purpose, however. On many small networks there is no real need for this specific tracking and the use of SLAAC can simplify the addressing of machines and allow them to access public sites (with or without Network Address Translation (NAT)).