From 04e254923939d0d600cd8b29dfe3b34ca7421052 Mon Sep 17 00:00:00 2001
From: Guillaume PELURE <onyxmsi@laposte.net>
Date: Tue, 2 Sep 2025 21:13:38 +0200
Subject: [PATCH] socat rejects TCP-LISTEN on ipv6 only networks

---
 acme.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/acme.sh b/acme.sh
index d70e323b..5c4d6543 100755
--- a/acme.sh
+++ b/acme.sh
@@ -2538,15 +2538,17 @@ _startserver() {
   _NC="socat"
   if [ "$Le_Listen_V6" ]; then
     _NC="$_NC -6"
+    SOCAT_OPTIONS=TCP6-LISTEN
   else
     _NC="$_NC -4"
+    SOCAT_OPTIONS=TCP4-LISTEN
   fi
 
   if [ "$DEBUG" ] && [ "$DEBUG" -gt "1" ]; then
     _NC="$_NC -d -d -v"
   fi
 
-  SOCAT_OPTIONS=TCP-LISTEN:$Le_HTTPPort,crlf,reuseaddr,fork
+  SOCAT_OPTIONS=$SOCAT_OPTIONS:$Le_HTTPPort,crlf,reuseaddr,fork
 
   #Adding bind to local-address
   if [ "$ncaddr" ]; then