diff --git a/modules/nixos/services/tailscale/exit-node/server.nix b/modules/nixos/services/tailscale/exit-node/server.nix
index 387cfd2..1cbeef3 100644
--- a/modules/nixos/services/tailscale/exit-node/server.nix
+++ b/modules/nixos/services/tailscale/exit-node/server.nix
@@ -7,13 +7,12 @@
   };
 
   # performance improvement
-  environment.systemPackages = [ pkgs.ethtool ];
   services.networkd-dispatcher = {
     enable = true;
     rules."50-tailscale" = {
       onState = [ "routable" ];
       script = ''
-        ${lib.getExe pkgs.ethtool} -K eth0 rx-udp-gro-forwarding on rx-gro-list off
+        ${lib.getExe pkgs.ethtool} -K enp0s20f0u1 rx-udp-gro-forwarding on rx-gro-list off
       '';
     };
   };