Add dedicated jupiter ip

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/jupiter-vps/configs/wireguard/default.nix

@@ -2,9 +2,13 @@
 let
   jupiterConfig = inputs.self.nixosConfigurations.jupiter.config;
   wireguardPort = 51820;
+  jupiterPublicIPv4 = "51.89.210.124";
 in
 {
-  boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
+  boot.kernel.sysctl = {
+    "net.ipv4.ip_forward" = 1;
+    "net.ipv4.conf.all.proxy_arp" = 1;
+  };
 
   sops.secrets."wireguard" = { };
 
@@ -22,7 +26,10 @@ in
       peers = [
         {
           name = "jupiter";
-          allowedIPs = [ "10.0.0.2/32" ];
+          allowedIPs = [
+            "10.0.0.2/32"
+            "${jupiterPublicIPv4}/32"
+          ];
           publicKey = "Lvx7bpyqI8rUrxYVDolz7T+EPuRWDohJAAToq7kH7EU=";
         }
       ];