diff --git a/machines/shinobu/services/router/dnsmasq.nix b/machines/shinobu/services/router/dnsmasq.nix
index 12fd09a..3aba65a 100644
--- a/machines/shinobu/services/router/dnsmasq.nix
+++ b/machines/shinobu/services/router/dnsmasq.nix
@@ -43,8 +43,8 @@ in
         cfg.vlan);
 
       nftset = [
-        "/pool.ntp.org/4#filter#iot_ntp4"
-        "/pool.ntp.org/6#filter#iot_ntp6" # does not work
+        "/pool.ntp.org/4#inet#filter#iot_ntp4"
+        "/pool.ntp.org/6#inet#filter#iot_ntp6" # does not work
       ];
 
       server = [