+ /* lookup session_table */
+ pppoe_lookup_1 (&pem->session_table, &cached_key, &cached_result,
+ a->client_mac, clib_host_to_net_u16 (a->session_id),
+ &key, &bucket, &result);
+
+ /* learn client session */
+ pppoe_learn_process (&pem->session_table, a->encap_if_index,
+ &key, &cached_key, &bucket, &result);