EVPN-VXLAN and P2P services using an MPLS-based core with IPv6 underlay

We extend support for the EVPN-VXLAN and point-topoint (P2P) services using an MPLS-based IPv6 underlay. The services operate over an MPLS-based core with IPv6 addresses on the PE routers using Segment Routing with Multiprotocol Label Switching (SR-MPLS). The services also operate on the segment routing-traffic engineering (SR-TE) addresses that are responsible for the path calculation between the EVPN PE devices. You can use the EVPN-MPLS commands with the MPLS-based IPv6 underlays. To enable EVPN-MPLS-over-IPv6 functionality, set the protocols evpn encapsulation mpls-inet6 configuration statement for each EVPN routing-instance in the [routing-instances protocols evpn encapsulation] hierarchy level.