diff --git a/salt/bird/bird6.conf b/salt/bird/bird6.conf
index 6b4d625..c55cc96 100644
--- a/salt/bird/bird6.conf
+++ b/salt/bird/bird6.conf
@@ -56,7 +56,7 @@ protocol ospf ZW6 {
 {%- endif %}
          area 0 {
               networks {
-                       fd23:42:c3d2:500::/56;
+                       fd23:42:c3d2:500::/57;
                        2a02:8106:208:5200::/56;
                        2a02:8106:211:e900::/56;
               };