Add VM for NAT64

hosts/vm-infra/configuration.nix

@@ -0,0 +1,40 @@
+{
+  ...
+}:
+
+{
+  # State version
+  system.stateVersion = "25.05";
+
+  # Machine hostname
+  networking.hostName = "vm-infra";
+
+  # Enabled modules
+  modules = {
+    profiles.vm.enable = true;
+  };
+
+  # Setup Tayga NAT64
+  services.tayga = {
+    enable = true;
+    ipv4 = {
+      address = "10.64.0.0";
+      router = {
+        address = "10.64.0.1";
+      };
+      pool = {
+        address = "10.64.0.1";
+        prefixLength = 16;
+      };
+    };
+    ipv6 = {
+      router = {
+        address = "fc00:6464::1";
+      };
+      pool = {
+        address = "fc00:6464::";
+        prefixLength = 96;
+      };
+    };
+  };
+}