From dba26c3240efaa6cdd9c6f163f8294242c2bdbfd Mon Sep 17 00:00:00 2001
From: neil <github@byneil.com>
Date: Mon, 6 Feb 2017 13:27:58 +0800
Subject: [PATCH] fix check for Mac nc command, it doesn't contain "openbsd",
 but it works.

---
 acme.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acme.sh b/acme.sh
index 08e06fb..d3d46b5 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1687,7 +1687,7 @@ _startserver() {
   fi
 
   if [ "$Le_Listen_V4$Le_Listen_V6$ncaddr" ]; then
-    if ! _contains "$nchelp" "OpenBSD"; then
+    if ! _contains "$nchelp" "-4"; then
       _err "The nc doesn't support '-4', '-6' or local-address, please install 'netcat-openbsd' and try again."
       _err "See $(__green $_PREPARE_LINK)"
       return 1