From 49d976fc4113917024ea65604627d9d4f7ab0736 Mon Sep 17 00:00:00 2001
From: Shay Banon <kimchy@gmail.com>
Date: Fri, 23 Sep 2011 00:57:57 +0300
Subject: [PATCH] add a commented out option to force the JVM to use IPv4 stack

---
 bin/elasticsearch.in.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bin/elasticsearch.in.sh b/bin/elasticsearch.in.sh
index 56179a794e3..b3230b58184 100644
--- a/bin/elasticsearch.in.sh
+++ b/bin/elasticsearch.in.sh
@@ -17,6 +17,9 @@ JAVA_OPTS="$JAVA_OPTS -Xmx${ES_MAX_MEM}"
 # reduce the per-thread stack size
 JAVA_OPTS="$JAVA_OPTS -Xss128k"
 
+# Force the JVM to use IPv4 stack
+# JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true"
+
 # Enable aggressive optimizations in the JVM
 #    - Disabled by default as it might cause the JVM to crash
 # JAVA_OPTS="$JAVA_OPTS -XX:+AggressiveOpts"