diff --git a/share/dictionary/dhcpv6/dictionary.rfc3646 b/share/dictionary/dhcpv6/dictionary.rfc3646
index b595db1892a1..85808982ba36 100644
--- a/share/dictionary/dhcpv6/dictionary.rfc3646
+++ b/share/dictionary/dhcpv6/dictionary.rfc3646
@@ -12,4 +12,4 @@
 ##############################################################################
 
 ATTRIBUTE	DNS-Servers				23	ipv6addr array
-ATTRIBUTE	Domain-List				24	octets		# Domain name list (DNS encoding)
+ATTRIBUTE	Domain-List				24	string array,encode=dns_label	# Domain name list (DNS encoding)