Devices supports inserted Option 82 flags in the DHCP packets for enhanced security when the packet is sent to the server. The provider edge router that is part of the EVPN instance acts as the relay agent and inserts these flags to the DHCP packets.
DHCPv4 and DHCPv6 relay of packets uses this process. With the introduction of EVPN IRB, the relay agent uses the IRB interface with EVPN for forwarding the requests and replies to and from the client or the server instead of using the default routing.
