<p><b>@miri64</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11215#discussion_r269191575">drivers/sx127x/sx127x_netdev.c</a>:</p>
<pre style='color:#555'>> @@ -54,6 +54,11 @@ static int _send(netdev_t *netdev, const iolist_t *iolist)
 
     uint8_t size = iolist_size(iolist);
 
+    /* Ignore send if packet size is 0 */
+    if (size == 0) {
+        return 0;
+    }
</pre>
<p>Is this check really required?</p>

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