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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/8823#discussion_r651164725">sys/net/gnrc/network_layer/ipv6/nib/nib.c</a>:</p>
<pre style='color:#555'>> @@ -838,9 +837,30 @@ static void _handle_nbr_sol(gnrc_netif_t *netif, const ipv6_hdr_t *ipv6,
     DEBUG("     - Destination address: %s\n",
           ipv6_addr_to_str(addr_str, &ipv6->dst, sizeof(addr_str)));
 #if GNRC_IPV6_NIB_CONF_SLAAC
-    /* TODO SLAAC behavior */
+    gnrc_netif_t *tgt_netif = gnrc_netif_get_by_ipv6_addr(&nbr_sol->tgt);
</pre>
<p>Mhhh the lines you quoted might indeed be a bug. However, it should only be used with the NS/NA target address, not with its source or destination address. Otherwise, redirect messages might cause unexpected behaviors.</p>

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