Symmetric IRB with EVPN Type 2 routes over IPv6 underlay

You can now use symmetrical integrated routing and bridging (IRB) to forward traffic consistently across all provider edge (PE) devices. The device carries EVPN Type 2 MAC-IP routes across an IPv6 underlay that provides an ECMP transport for scalable, multitenant L2 and L3 connectivity. For each routing instance, use the irb-symmetric-routing vni statement under the [edit protocols evpn] hierarchy to maintain symmetrical bridging and routing.