diff --git a/hive.nix b/hive.nix
index e3c05be..105787d 100644
--- a/hive.nix
+++ b/hive.nix
@@ -21,4 +21,14 @@ in {
     deployment.allowLocalDeployment = true;
     networking.hostName = name;
   };
+  kat-r86s = { name, nodes, ... }: {
+    imports = [
+      ./machines/kat-r86s/configuration.nix
+      users.root
+    ];
+    networking.hostName = name;
+    users.users.root.openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAA16foz+XzwKwyIR4wFgNIAE3Y7AfXyEsUZFVVz8Rie catvayor@katvayor"
+    ];
+  };
 }
diff --git a/machines/kat-r86s/configuration.nix b/machines/kat-r86s/configuration.nix
new file mode 100644
index 0000000..2811361
--- /dev/null
+++ b/machines/kat-r86s/configuration.nix
@@ -0,0 +1,113 @@
+# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
+
+{ config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ./hardware-configuration.nix
+#      ./router.nix
+    ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.supportedFilesystems = [ "bcachefs" ];
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+  networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
+  time.timeZone = "Europe/Paris";
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.UTF-8";
+  console = {
+    font = "Lat2-Terminus16";
+    keyMap = "fr";
+  };
+
+  # Enable the X11 windowing system.
+  # services.xserver.enable = true;
+
+  # security.polkit.enable = true;
+  # programs.light.enable = true;
+  services.dbus.packages = with pkgs; [ dconf ];
+
+  nixpkgs.config.allowUnfree = true;
+
+  # Configure keymap in X11
+  # services.xserver.xkb.layout = "us";
+  # services.xserver.xkb.options = "eurosign:e,caps:escape";
+
+  # Enable CUPS to print documents.
+  # services.printing.enable = true;
+
+  # Enable touchpad support (enabled default in most desktopManager).
+  # services.xserver.libinput.enable = true;
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  programs.zsh.enable = true;
+  users.users.guest = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ];
+    packages = with pkgs; [
+    ];
+  };
+
+  environment.systemPackages = with pkgs; [
+    wget
+    brightnessctl
+    nix-search-cli
+    git
+    btop
+    ranger
+    dnsmasq
+    screen
+  ];
+
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+
+  # List services that you want to enable:
+
+  # Enable the OpenSSH daemon.
+  services.openssh.enable = true;
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # Copy the NixOS configuration file and link it from the resulting system
+  # (/run/current-system/configuration.nix). This is useful in case you
+  # accidentally delete configuration.nix.
+  # system.copySystemConfiguration = true;
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  #
+  # Most users should NEVER change this value after the initial install, for any reason,
+  # even if you've upgraded your system to a new NixOS release.
+  #
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system.
+  #
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  #
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  #
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "23.11"; # Did you read the comment?
+
+}
+
diff --git a/machines/kat-r86s/hardware-configuration.nix b/machines/kat-r86s/hardware-configuration.nix
new file mode 100644
index 0000000..9b6970a
--- /dev/null
+++ b/machines/kat-r86s/hardware-configuration.nix
@@ -0,0 +1,40 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" "sd_mod" "sdhci_pci" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "UUID=2d6f7d3a-936d-457c-86c7-f49d816ff5b7";
+      fsType = "bcachefs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/DD9A-3823";
+      fsType = "vfat";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp1s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp2s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp3s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlo1.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}
diff --git a/machines/kat-r86s/router.nix b/machines/kat-r86s/router.nix
new file mode 100644
index 0000000..09aedbe
--- /dev/null
+++ b/machines/kat-r86s/router.nix
@@ -0,0 +1,66 @@
+{config, lib, pkgs, ...}: {
+  boot.kernel.sysctl = {
+    "net.ipv4.conf.all.forwarding" = true;
+    "net.ipv6.conf.all.forwarding" = true;
+  };
+  networking = {
+    interfaces = {
+      # wan wifi
+      wlo1.useDHCP = true;
+
+      # cri
+      enp1s0.useDHCP = true;
+
+      # HPE
+      enp2s0 = {
+        useDHCP = false;
+        ipv4.addresses = [{
+          address = "129.199.156.112";
+          prefixLength = 32;
+        }];
+        mtu = 9000;
+      };
+
+      # thurne
+      enp3s0 = {
+        useDHCP = false;
+        ipv4.addresses = [{
+          address = "192.168.42.1";
+          prefixLength = 24;
+        }];
+        mtu = 9000;
+      };
+    };
+
+    nat = {
+      enable = true;
+      extraCommands = ''
+        iptables -t nat -A POSTROUTING -o wlo1 -j MASQUERADE
+        iptables -t nat -A POSTROUTING -o enp1s0 -j MASQUERADE
+      '';
+    };
+    firewall = {
+      enable = true;
+      extraCommands = ''
+        iptables -A FORWARD -i enp3s0 -o wlo1 -j ACCEPT
+        iptables -A FORWARD -i wlo1 -o enp3s0 -m state --state RELATED,ESTABLISHED -j ACCEPT
+
+        iptables -A FORWARD -i enp3s0 -o enp1s0 -j ACCEPT
+        iptables -A FORWARD -i enp1s0 -o enp3s0 -m state --state RELATED,ESTABLISHED -j ACCEPT
+
+        iptables -A FORWARD -i enp2s0 -o enp1s0 -j ACCEPT
+        iptables -A FORWARD -i enp1s0 -o enp2s0 -j ACCEPT
+      '';
+    };
+  };
+  services.dnsmasq = {
+    enable = true;
+    settings = {
+      interface = [ "enp2s0" "enp3s0" ];
+      bind-dynamic = true;
+      dhcp-option = "3,0.0.0.0";
+      dhcp-range = "192.168.42.2,192.168.42.254,255.255.255.0,12h";
+      # dhcp-host = "a8:b1:3b:75:6f:92,129.199.224.96";
+    };
+  };
+}