diff --git a/roles/radvd/templates/radvd.conf.j2 b/roles/radvd/templates/radvd.conf.j2
index a751dd9..4013fd9 100644
--- a/roles/radvd/templates/radvd.conf.j2
+++ b/roles/radvd/templates/radvd.conf.j2
@@ -12,6 +12,13 @@ interface br-{{ site_code }} {
     AdvAutonomous on;
     AdvRouterAddr on;
   };
+  {% if global_ipv6 is defined %}
+  prefix {{ global_ipv6 | ipaddr('address') | ipsubnet(64) }} {
+    AdvOnLink on;
+    AdvAutonomous on;
+    AdvRouterAddr on;
+  };
+  {% endif %}
   RDNSS {{ batman_ipv6 | ipaddr('address')}} {
   };
 };