From bb2acae949cf8d04e69a9a96226dbf4ef9f513c0 Mon Sep 17 00:00:00 2001
From: Subsonic154 <subsonicgamingbeatz415@gmail.com>
Date: Thu, 16 Apr 2026 10:58:43 -0400
Subject: [PATCH] Better detection of loopback and local addresses

---
 .../scala/net/psforever/actors/net/LoginActor.scala | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/main/scala/net/psforever/actors/net/LoginActor.scala b/src/main/scala/net/psforever/actors/net/LoginActor.scala
index b11020c37..bc82119bc 100644
--- a/src/main/scala/net/psforever/actors/net/LoginActor.scala
+++ b/src/main/scala/net/psforever/actors/net/LoginActor.scala
@@ -91,10 +91,15 @@ object LoginActor {
    * @return the appropriate host address
    */
   private def selectHostAddress(ipAddress: String): InetSocketAddress = {
-    ipAddress.substring(0, ipAddress.indexOf(".")) match {
-      case "127"                        => localHostAddress
-      case "10" | "169" | "172" | "192" => gameTestServerAddressLocal
-      case _                            => gameTestServerAddressPublic
+    val address = InetAddress.getByName(ipAddress)
+    if (address.isLoopbackAddress()) {
+      localHostAddress
+    }
+    else if (address.isSiteLocalAddress()) {
+      gameTestServerAddressLocal
+    }
+    else {
+      gameTestServerAddressPublic
     }
   }
 }