ignore loopback address

Author: EpicPlayerA10

src/main/java/com/epicplayera10/joinguard/listeners/LoginListener.java

@@ -25,6 +25,12 @@ public void onLogin(AsyncPlayerPreLoginEvent event) {
         UUID playerUuid = event.getUniqueId();
         String ipAddress = event.getAddress().getHostAddress();
 
+        if (event.getAddress().isLoopbackAddress()) {
+            // Ignore loopback addresses (localhost)
+            JoinGuard.instance().getLogger().info("Ignoring loopback address for player: " + playerName);
+            return;
+        }
+
         // Track alts
         trackAltAccount(ipAddress, playerUuid);