Mention 9-tcp-close patch.
diff --git a/Plan9.md b/Plan9.md
index a773900..f7cd947 100644
--- a/Plan9.md
+++ b/Plan9.md
@@ -29,6 +29,10 @@
* [9-pread-offset](http://9legacy.org/9legacy/patch/9-pread-offset.diff)
+The TCP connection control file must handle the "close" message to be able close a TCP connection gracefully, while waking up the readers:
+
+* [9-tcp-close](http://9legacy.org/9legacy/patch/9-tcp-close.diff)
+
If you're running Plan 9 on Raspberry Pi, you'll require the latest [bcm](https://9p.io/magic/webls?dir=/sources/contrib/miller/9/bcm) kernel from Richard Miller.
# Installation
