Add base requirements for NAT

hosts/phoenix.lewd.wtf/networking.nix

@@ -10,6 +10,13 @@
     };
   };
 
+  networking.nat = {
+    enable = true;
+    internalInterfaces = ["ve-+"];
+    externalInterface = "wg0";
+    enableIPv6 = true;
+  };
+
   networking.interfaces.br0.ipv4.addresses = [
     {
       address = "192.168.0.42";