finally fix ipv6?

machines.nix

@@ -19,6 +19,9 @@
       # networking
       ./modules/nixos/laptop.nix
 
+      # vpn
+      ./modules/nixos/openvpn-client.nix
+
       # ly display manager
       ./modules/nixos/ly.nix
 

modules/nixos/openvpn-client.nix

@@ -0,0 +1,8 @@
+{lib, ...}: {
+  services.openvpn.servers = {
+    "173.249.5.230" = {config = ''config /etc/openvpn-confs/173.249.5.230.ovpn'';};
+  };
+  networking.enableIPv6 = lib.mkForce false;
+  environment.persistence."/persist".directories = ["/etc/openvpn-confs"];
+  boot.kernelParams = ["ipv6.disable=1"];
+}