nixos: gen 67 @ lilac — 2026-09-22 15:39 26.05.20260918.cf9d2fb (Yarara) ----- IP over bluetooth for seamless LAN-Mouse

hosts/lilac/default.nix

@@ -32,14 +32,42 @@ in
     (llama-cpp.override { vulkanSupport = true; })
   ];
 
-  boot.kernelModules = [ "thunderbolt-net" ];
+  networking.interfaces.bnep0.ipv4.addresses = [{
-
-  networking.interfaces.thunderbolt0.ipv4.addresses = [{
     address = "10.0.0.1";
     prefixLength = 24;
   }];
 
-  networking.firewall.interfaces."thunderbolt0".allowedUDPPorts = [ 4242 ];
+  networking.firewall.interfaces."bnep0".allowedUDPPorts = [ 4242 ];
+
+  systemd = {
+    services = {
+      # 1. Start the listening server profile
+      bt-pan-server = {
+        description = "Bluetooth PAN GN Server";
+        after = [ "bluetooth.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -s gn pan0";
+          Restart = "always";
+          RestartSec = 5;
+        };
+      };
+
+      # 2. Trust and persistently attempt connection to Device B
+      bt-pan-client = {
+        description = "Bluetooth PAN Client Connection to Device B";
+        after = [ "bluetooth.service" "bt-pan-server.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          # Replace XX:XX:XX:XX:XX:XX with Device B's actual Bluetooth MAC Address
+          ExecStartPre = "${pkgs.bluez}/bin/bluetoothctl trust 70:A6:CC:47:E7:75";
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -c 70:A6:CC:47:E7:75 gn";
+          Restart = "always";
+          RestartSec = 10; # Retry every 10 seconds if Device B goes out of range
+        };
+      };
+    };
+  };
 
   hardware.graphics = {
     enable = true;

hosts/violet/default.nix

@@ -25,12 +25,42 @@
 
   boot.kernelModules = [ "thunderbolt-net" ];
 
-  networking.interfaces.thunderbolt0.ipv4.addresses = [{
+  networking.interfaces.bnep0.ipv4.addresses = [{
     address = "10.0.0.2";
     prefixLength = 24;
   }];
 
-  networking.firewall.interfaces."thunderbolt0".allowedUDPPorts = [ 4242 ];
+  networking.firewall.interfaces."bnep0".allowedUDPPorts = [ 4242 ];
+
+  systemd = {
+    services = {
+      # 1. Start the listening server profile
+      bt-pan-server = {
+        description = "Bluetooth PAN GN Server";
+        after = [ "bluetooth.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -s gn pan0";
+          Restart = "always";
+          RestartSec = 5;
+        };
+      };
+
+      # 2. Trust and persistently attempt connection to Device A
+      bt-pan-client = {
+        description = "Bluetooth PAN Client Connection to Device A";
+        after = [ "bluetooth.service" "bt-pan-server.service" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          # Replace XX:XX:XX:XX:XX:XX with Device B's actual Bluetooth MAC Address
+          ExecStartPre = "${pkgs.bluez}/bin/bluetoothctl trust 84:D1:C1:A9:EE:52";
+          ExecStart = "${pkgs.bluez-tools}/bin/bt-network -c 84:D1:C1:A9:EE:52 gn";
+          Restart = "always";
+          RestartSec = 10; # Retry every 10 seconds if Device B goes out of range
+        };
+      };
+    };
+  };
 
   services.tlp = {
     enable = false;

system/network/default.nix

@@ -17,6 +17,11 @@
     };
   };
 
+  hardware.bluetooth = {
+    powerOnBoot = true;
+    settings.General.Enable = "Source,Sink,Media,Socket,Network";
+  };
+
   boot.extraModprobeConfig = ''
     options iwlwifi power_save=0
   '';