<p><b>@jia200x</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11022#discussion_r286540601">sys/net/gnrc/link_layer/gnrc_lorawan/gnrc_lorawan_mcps.c</a>:</p>
<pre style='color:#555'>> +            if (mac->mcps.nb_trials-- == 0) {
+                _end_of_tx(mac, MCPS_CONFIRMED, -ETIMEDOUT);
+            }
+        }
+        else {
+            _end_of_tx(mac, state, GNRC_LORAWAN_REQ_STATUS_SUCCESS);
+        }
+
+        mac->msg.type = MSG_TYPE_MCPS_ACK_TIMEOUT;
+        if (mac->mcps.outgoing_pkt) {
+            xtimer_set_msg(&mac->rx, 1000000 + random_uint32_range(0, 2000000), &mac->msg, thread_getpid());
+        }
+    }
+}
+
+void gnrc_lorawan_mcps_request(gnrc_lorawan_t *mac, mcps_request_t *mcps_request, mcps_confirm_t *mcps_confirm)
</pre>
<p>are you OK with this statement?</p>

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