The document describes an extension of the decap group feature, that allows IPv6 addresses to be configured and used

This feature comprises two parts:

To extend Traffic Steering to Nexthop Groups (GRE) by allowing us to specify one or more nexthop groups of type DzGRE (DANZ GRE) as the destination for a TAP aggregation steering policy. A DzGRE header will be encapsulated to the packets sending out a nexthop group of type DZGRE.

To extend GRE Tunnel Termination by allowing decapsulation of traffic received from nexthop groups of type DZGRE and adding VLAN tags based on DZGRE metadata.