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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/16590#discussion_r665929039">sys/net/gnrc/application_layer/dhcpv6/client.c</a>:</p>
<pre style='color:#555'>> +void dhcpv6_client_conf_done(unsigned iface)
+{
+    gnrc_netif_t *netif = gnrc_netif_get_by_pid(iface);
+
+    /* inform upstream network about the subnet(s) now managed by this router */
+    gnrc_ipv6_nib_change_rtr_adv_rio_iface(netif, true);
 }
</pre>
<p>Shouldn't this rather be part of a configuration module like <code>simple_pd</code>? Does not seem right, that DHCPv6 <em>always</em> uses this option.</p>

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