DC gateway: MX
EVPN
[edit groups __contrail__ routing-instances _contrail_l2_4_Blue]
lab@mxC-2# show
vtep-source-interface lo0.0;
instance-type virtual-switch;
vrf-import _contrail_l2_4_Blue-import;
vrf-export _contrail_l2_4_Blue-export;
protocols {
  evpn {
       encapsulation vxlan;
       extended-vni-list all;
   }
}
bridge-domains {
   bd-4 {
       vlan-id none;
       routing-interface irb.4;
       vxlan {
           vni 4;
       }
   }
}