diff --git a/nixos/doc/manual/release-notes/rl-1703.xml b/nixos/doc/manual/release-notes/rl-1703.xml
index 8f9694bad8b..6e43949419d 100644
--- a/nixos/doc/manual/release-notes/rl-1703.xml
+++ b/nixos/doc/manual/release-notes/rl-1703.xml
@@ -217,6 +217,18 @@ following incompatible changes:</para>
     </para>
   </listitem>
 
+  <listitem>
+    <para>
+    Iputils no longer provide ping6 and traceroute6. The functionality of
+    these tools have been integrated into ping and traceroute respectively. To
+    enforce an address family the new flags <literal>-4</literal> and
+    <literal>-6</literal> have been added. One notable incompabtibility is that
+    specifying an interface (for link-local ipv6 for instance) is no longer done
+    with the <literal>-I</literal> flag, but by encoding the interface into the
+    address (<literal>ping fe80::1%eth0</literal>).
+    </para>
+  </listitem>
+
 </itemizedlist>