From 262cf0a5925389216d2a919cfbd0a30d09ed3498 Mon Sep 17 00:00:00 2001
From: Marten Seemann <martenseemann@gmail.com>
Date: Tue, 17 Oct 2023 12:50:40 +0700
Subject: [PATCH] fix IPv4 ECN control message length on FreeBSD (#4110)

---
 sys_conn_helper_freebsd.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys_conn_helper_freebsd.go b/sys_conn_helper_freebsd.go
index 5e635b18d..a53ca2eae 100644
--- a/sys_conn_helper_freebsd.go
+++ b/sys_conn_helper_freebsd.go
@@ -14,7 +14,7 @@ const (
 	ipv4PKTINFO  = 0x7
 )
 
-const ecnIPv4DataLen = 4
+const ecnIPv4DataLen = 1
 
 const batchSize = 8