Nokia Cisco Individual Independent HPE Independent Nokia Ethernet Virtual Private Network (EVPN) provides a unified BGP control plane for both intra- and inter-subnet forwarding within tenant networks. When a tenant network spans multiple domains, including any combination of EVPN and IPVPN domains, it becomes necessary to define the interworking mechanisms among these BGP domains (EVPN and VPN-IP) to ensure seamless end-to-end tenant connectivity. This document defines these interworking procedures. In addition, this document defines a new BGP Path Attribute, referred to as D-PATH (Domain PATH), which provides loop prevention for gateway nodes by protecting against control plane loops. The introduction of D-PATH modifies the BGP best path selection process for Multiprotocol BGP inter-subnet forwarding routes of SAFI 128 (IPVPN) and SAFI 70 (EVPN). As a result, this specification updates the BGP best path selection procedure, but only in the context of IPVPN and EVPN route families.