X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/9af85efb7be828ea239d51731571b25094211cf6..c1ee83eb81665eac64862f3ad66ecf2ec056b1ec:/test/scripts/4058-pipe-conn-tfo/4058

diff --git a/test/scripts/4058-pipe-conn-tfo/4058 b/test/scripts/4058-pipe-conn-tfo/4058
index 2a0639095..999cfad4a 100644
--- a/test/scripts/4058-pipe-conn-tfo/4058
+++ b/test/scripts/4058-pipe-conn-tfo/4058
@@ -1,5 +1,8 @@
 # Early-pipelining, with TFO
 #
+# NOTE: ensure that TFO is fully enabled in the kernel.
+# For linux: sysctl net.ipv4.tcp_fastopen=3
+# 
 #
 # Packet delays so we can see TFO operational in packet captures
 # Wipe any stored TFO cookie, to start from known state.