X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/c8f419afe4b673ce93b7db07eb3093d8a07afb5f..fd0a407eb80151d554a057eca8965abcbfd9a7a1:/test/scripts/4068-pipe-conn-gnutls-tfo/4068

diff --git a/test/scripts/4068-pipe-conn-gnutls-tfo/4068 b/test/scripts/4068-pipe-conn-gnutls-tfo/4068
index 9a454391a..4e9dfa500 100644
--- a/test/scripts/4068-pipe-conn-gnutls-tfo/4068
+++ b/test/scripts/4068-pipe-conn-gnutls-tfo/4068
@@ -1,5 +1,8 @@
 # early-pipe, starttls, tfo
 #
+# NOTE: ensure that TFO is fully enabled in the kernel.
+# For linux: sysctl net.ipv4.tcp_fastopen=3
+# 
 # Not attempted without a cache entry
 exim -bd -DSERVER=server -oX PORT_D
 ****