dhcpv6-options: add DUID description

1 files changed, 13 insertions, 0 deletions

diff --git a/docs/_include/interface-dhcpv6-options.txt b/docs/_include/interface-dhcpv6-options.txt
index e7eaffb1..e047e92a 100644
--- a/docs/_include/interface-dhcpv6-options.txt
+++ b/docs/_include/interface-dhcpv6-options.txt
@@ -1,4 +1,17 @@
 .. cfgcmd:: set interfaces {{ var0 }} <interface> {{ var2 }} {{ var3 }}
+  {{ var5 }} {{ var6 }} dhcpv6-options duid <duid>
+
+  The DHCP unique identifier (DUID) is used by a client to get an IP address
+  from a DHCPv6 server. It has a 2-byte DUID type field, and a variable-length
+  identifier field up to 128 bytes. Its actual length depends on its type. The
+  server compares the DUID with its database and delivers configuration data
+  (address, lease times, DNS servers, etc.) to the client.
+
+  .. code-block:: none
+
+    set interfaces {{ var0 }} {{ var1 }} {{ var2 }} {{ var4 }} {{ var5 }} {{ var7 }} duid '0e:00:00:01:00:01:27:71:db:f0:00:50:56:bf:c5:6d'
+
+.. cfgcmd:: set interfaces {{ var0 }} <interface> {{ var2 }} {{ var3 }}
   {{ var5 }} {{ var6 }} dhcpv6-options parameters-only
 
   This statement specifies dhcp6c to only exchange informational configuration