diff --git a/config/net/core.nix b/config/net/core.nix
index 23c6e33..af3f4ba 100644
--- a/config/net/core.nix
+++ b/config/net/core.nix
@@ -79,6 +79,7 @@
         c3d2-gw1 = "fd23:42:c3d2:581::c3d2:1";
         c3d2-gw2 = "fd23:42:c3d2:581::c3d2:2";
         c3d2-gw3 = "fd23:42:c3d2:581::c3d2:3";
+        cls-gw = "fd23:42:c3d2:581::c3d2:4";
         freifunk = "fd23:42:c3d2:581:8000::1";
         mgmt-gw = "fd23:42:c3d2:581::8:3";
         priv1-gw = "fd23:42:c3d2:581::c:0";