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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/8276#discussion_r307268807">sys/net/gnrc/netif/ieee802154/gnrc_netif_ieee802154.c</a>:</p>
<pre style='color:#555'>> @@ -90,7 +90,7 @@ static inline bool _already_received(gnrc_netif_t *netif,
 static gnrc_pktsnip_t *_recv(gnrc_netif_t *netif)
 {
     netdev_t *dev = netif->dev;
-    netdev_ieee802154_rx_info_t rx_info;
+    netdev_ieee802154_rx_info_t rx_info = { .crc_valid = 0 };
</pre>
<p>Most of the  devices calculate the CRC themselves and don't (necessarily) expose it. Furthermore, oftentimes only frames with valid CRCs are even indicated by our drivers. In that case, <code>.crc</code> needs to be set to a value !=0. Where does this happen? Or did I misunderstand something?</p>

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