Propagation of ARP/ND Flags in EVPN
Senthil Sathappan, Wen Yen Lin, Kiran Nagaraj, Jorge Rabadán · 2019
This document defines an Extended Community that is advertised along with an EVPN MAC/IP Advertisement route and carries information relevant to the ARP/ND resolution, so that an EVPN PE implementing a proxy-ARP/ND or ARP/ND (on IRB interfaces) function can reply to ARP Requests or Neighbor Solicitations with the correct information.