diff --git a/templates/networking.j2 b/templates/networking.j2
index dd78c4c..c176831 100644
--- a/templates/networking.j2
+++ b/templates/networking.j2
@@ -35,6 +35,7 @@ iface {{ networking_main_iface }}
     use dhcp
 {% endif %}
 {% if wanted_ip6_suffix is defined %}
+iface br0 inet6 auto
     up ip token set {{ wanted_ip6_suffix }}/64 dev {% if bridged_network is defined and bridged_network %}br0{% else %}{{ networking_main_iface }}{% endif %}
 {% endif %}
 {% if wanted_ip6 is defined %}