From cdf6922bddaf5a99759b2d751b7177556b30b442 Mon Sep 17 00:00:00 2001
From: nthumann <me@n-thumann.de>
Date: Fri, 7 Jul 2023 23:38:10 +0200
Subject: [PATCH] Fix handling of IPv6 addresses in getClientIP

---
 server/uptime-kuma-server.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/server/uptime-kuma-server.js b/server/uptime-kuma-server.js
index b45a749b9..728b8f158 100644
--- a/server/uptime-kuma-server.js
+++ b/server/uptime-kuma-server.js
@@ -249,9 +249,9 @@ class UptimeKumaServer {
 
             return (typeof forwardedFor === "string" ? forwardedFor.split(",")[0].trim() : null)
                 || socket.client.conn.request.headers["x-real-ip"]
-                || clientIP.replace(/^.*:/, "");
+                || clientIP.replace(/^::ffff:/, "");
         } else {
-            return clientIP.replace(/^.*:/, "");
+            return clientIP.replace(/^::ffff:/, "");
         }
     }