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.

DMF-8.4.0 D.MAC Rewrite

Destination MAC rewrite for the records-per-interface NetFlow and IPFIX feature becomes the new default setting and applies to EOS and SWL. A configuration option exists for using src-mac when overwriting the dst-mac isn't preferred.

D.MAC Rewrite DMF-8.6.0