From 97cf21acd2ff89a537600b18626cdba5b8139a31 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 17 Apr 2026 17:33:51 +0200
Subject: [PATCH] CURLOPT_RTSP_SESSION_ID.md: clarify reuse "dangers"

When re-using easy handles the session id stays, unless you do something
about it.

Closes #21358
---
 docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md b/docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md
index e60438eecb..f7b41e4450 100644
--- a/docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md
+++ b/docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md
@@ -39,6 +39,9 @@ option.
 Using this option multiple times makes the last set string override the
 previous ones. Set it to NULL to disable its use again.
 
+**WARNING:** when changing the URL's origin in a reused easy handle, you might
+want to set or clear the Session ID to avoid reuse across different hosts.
+
 # DEFAULT
 
 NULL