diff --git a/docs/how-it-works/sandboxes/overview.mdx b/docs/how-it-works/sandboxes/overview.mdx
index 2094a7280e..cb346f7923 100644
--- a/docs/how-it-works/sandboxes/overview.mdx
+++ b/docs/how-it-works/sandboxes/overview.mdx
@@ -777,6 +777,14 @@ openshell forward start 8000 my-sandbox -d    # run in background
 ```
 
 OpenShell prints the local URL only after the forward listener is reachable. Background forwards must be tracked locally so `openshell forward list` and `openshell forward stop` can manage them.
+
+To bind the local side to an IPv6 loopback address, pass it positionally as `[bind_address:]port`. IPv6 addresses are bracketed in both the SSH forward argument and the printed access URL:
+
+```shell
+openshell forward start ::1:8000 my-sandbox
+# Local URL: http://[::1]:8000/
+```
+
 CLI forwards run independently of SSH multiplexing settings in your SSH config.
 Foreground forwards end when the command exits; only background forwards appear in `forward list`.