Add the x-forwarded-for header to vaultwarden
diff --git a/modules/vaultwarden.nix b/modules/vaultwarden.nix
index 771f16c..ee163ab 100644
--- a/modules/vaultwarden.nix
+++ b/modules/vaultwarden.nix
@@ -71,6 +71,7 @@
 
         REQUIRE_DEVICE_EMAIL = true;
 
+        IP_HEADER = "X-Forwarded-For";
 
         # YubiKey Settings
         YUBICO_CLIENT_ID = "89788";