Host route generation support for ARP

The host route generation for devices connected to devices in a data center. When you enable this feature on an interface for IPv4 or IPv6, host routes are created in the routing table for each device present in ARP (IPv4) and NDP (IPv6). These host routes can be exported to routing protocols to be advertised to the network by matching the new policy qualifier l2-learned-host-routing statement. You can configure the host-route-generation statement under the [edit interfaces name unit name family inet/inet6] hierarchy, on each interface and for each address family.