diff --git a/hosts/arcturus/default.nix b/hosts/arcturus/default.nix
index 458a92c..dde69a2 100644
--- a/hosts/arcturus/default.nix
+++ b/hosts/arcturus/default.nix
@@ -34,10 +34,6 @@
     };
   };
 
-  systemd.services.systemd-networkd.environment = {
-    SYSTEMD_LOG_LEVEL = "debug";
-  };
-
   systemd.network = {
     enable = true;
 
diff --git a/hosts/lyra/default.nix b/hosts/lyra/default.nix
index e537159..28ea912 100644
--- a/hosts/lyra/default.nix
+++ b/hosts/lyra/default.nix
@@ -22,11 +22,13 @@
 
   networking = {
     networkmanager.enable = true;
+    nftables.enable = true;
 
     firewall = {
       allowedTCPPorts = [
         2222
       ];
+      allowedUDPPorts = [];
     };
   };