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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11623#discussion_r325022059">sys/net/gnrc/network_layer/ipv6/ext/frag/gnrc_ipv6_ext_frag.c</a>:</p>
<pre style='color:#555'>> +    snd_buf->per_frag = NULL;
+    snd_buf->pkt = NULL;
+}
+
+static void _snd_buf_free(gnrc_ipv6_ext_frag_send_t *snd_buf)
+{
+    if (snd_buf->per_frag) {
+        gnrc_pktbuf_release(snd_buf->per_frag);
+    }
+    if (snd_buf->pkt) {
+        gnrc_pktbuf_release(snd_buf->pkt);
+    }
+    _snd_buf_del(snd_buf);
+}
+
+static gnrc_pktsnip_t *_determine_last_per_frag(gnrc_pktsnip_t *ptr)
</pre>
<p>Added documentation to its definition above.</p>

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