Previously, DMF calculated the overlap policy limit by determining how many policies use the same filter interface, irrespective of whether the policies are active or inactive. By default, the overlap policy limit is 4, and the maximum is 10.

The D.MAC Rewrite feature provides user an option to identify Filter interface by overriding the destination MAC address of the packet received on the filter interface. This feature works in push-per-filter and push-per-policy modes and is used for auto-assigned and user-configured VLANs.