network auto negotiate network speed service

configuration.nix

@@ -8,6 +8,8 @@
   imports =
     [ # Include the results of the hardware scan...
       ./hardware-configuration.nix
+      ./hwaccel.nix
+      ./network.nix
       
       # ...and additional configurations...
       ./var_reg.nix 
@@ -19,9 +21,6 @@
       ./ssh.nix
       ./program-tmux.nix
 
-      # Hardware
-      ./hwaccel.nix
-
       # Services
       ./wireguard.nix
       ./docker.nix

network.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }: {
+  systemd.services.force-gigabit-speed = {
+    description = "Force 1Gbps link speed on enp1s0";
+    # This service should run before the network is considered "up"
+    wantedBy = [ "network-pre.target" ];
+    before = [ "network-pre.target" ];
+    
+    # The command to execute
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = "${pkgs.ethtool}/bin/ethtool -s enp1s0 speed 1000 duplex full autoneg on";
+    };
+  };
+}