1 files changed, 50 insertions, 0 deletions
diff --git a/router.nix b/router.nix
new file mode 100644
index 0000000..ad58ba8
--- /dev/null
+++ b/router.nix
@@ -0,0 +1,50 @@
+{ ... }:
+let
+  lanInterface = "enp5s0f0u2";
+in
+{
+  boot.kernel.sysctl."net.ipv4.conf.all.forwarding" = true;
+  networking.nftables.enable = true;
+  networking.firewall.filterForward = true;
+  networking.nat = {
+    enable = true;
+    externalInterface = "enp8s0";
+    internalInterfaces = [ lanInterface ];
+    forwardPorts = [{
+      sourcePort = 1234;
+      destination = "10.69.0.2:12345";
+    }];
+  };
+  networking.interfaces.${lanInterface}.ipv4.addresses = [{
+    address = "10.69.0.1";
+    prefixLength = 16;
+  }];
+  services.kea.dhcp4 = {
+    enable = true;
+    settings = {
+      interfaces-config = {
+        interfaces = [ lanInterface ];
+        service-sockets-max-retries = 200000;
+        service-sockets-retry-wait-time = 5000;
+      };
+      lease-database = {
+        name = "/var/lib/kea/dhcp4-leases.csv";
+        type = "memfile";
+      };
+      valid-lifetime = 4000;
+      renew-timer = 2000;
+      rebind-timer = 3500;
+      subnet4 = [{
+        id = 1;
+        subnet = "10.69.0.0/16";
+        pools = [{
+          pool = "10.69.0.2 - 10.69.0.254";
+        }];
+        option-data = [
+          { name = "routers"; data = "10.69.0.1"; }
+          { name = "domain-name-servers"; data = "1.1.1.1, 1.0.0.1"; }
+        ];
+      }];
+    };
+  };
+}