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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/12197#discussion_r322904403">sys/shell/commands/sc_gnrc_icmpv6_echo.c</a>:</p>
<pre style='color:#555'>> @@ -339,7 +339,8 @@ static void _print_reply(_ping_data_t *data, gnrc_pktsnip_t *icmpv6,
 
         /* not our ping */
         if ((byteorder_ntohs(icmpv6_hdr->id) != data->id) ||
-            !ipv6_addr_equal(from, &data->host)) {
+            !(ipv6_addr_is_multicast(&data->host) &&
</pre>
<p>Or to avoid these kind of errors once and for all:</p>
<div class="highlight highlight-source-c"><pre>        <span class="pl-c"><span class="pl-c">/*</span> not our ping <span class="pl-c">*/</span></span>
        <span class="pl-k">if</span> (byteorder_ntohs(icmpv6_hdr->id) != data->id) {
            <span class="pl-k">return</span>;
        }

        <span class="pl-k">if</span> (!ipv6_addr_is_multicast(&data->host) &&
            !ipv6_addr_equal(from, &data->host)) {
            <span class="pl-k">return</span>;
        }</pre></div>

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