-void to_vpp(const route::path& p, vapi_payload_ip_mroute_add_del& payload);
-void to_vpp(const route::path& p, vapi_payload_ip_add_del_route& payload);
+vapi_enum_mfib_itf_flags to_api(const route::itf_flags_t& flags);
+const route::itf_flags_t& from_api(vapi_enum_mfib_itf_flags flags);