Inclusive Mcst BGP route ( #Drat-Rosen Distr tree send to every member of the VPN))
I-PMSI tunnel: use Ingress Replication ???? How does it work
S-PMSI tunnel: selective ( not supported, switch over the traffic based on threshold )
9 Support for Multicast
https://tools.ietf.org/html/draft-ietf-bess-evpn-overlay-01#page-19
Ingress Replication Tunnels in Multicast VPN
https://tools.ietf.org/html/rfc7988