diff --git a/installer/resources/wrapper.config b/installer/resources/wrapper.config
index 2a459d6d4..8e7880dec 100644
--- a/installer/resources/wrapper.config
+++ b/installer/resources/wrapper.config
@@ -66,29 +66,30 @@ wrapper.java.additional.4.stripquotes=TRUE
 # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560044. 
 # Two things that may help if you experience this issue
 # 1) "echo 0 > /proc/sys/net/ipv6/bindv6only" as root; or
-# 2) uncomment the following line:
+# 2) uncomment the next two lines:
 #wrapper.java.additional.5=-Djava.net.preferIPv4Stack=true
+#wrapper.java.additional.6=-Djava.net.preferIPv6Addresses=false
 
 # Jetty says this is a security risk
 # Uncommenting this won't help as the router forces it to true
 # If you really need this, you have to set it in jetty.xml
 # somehow - not sure exactly but here's a clue:
 # org.mortbay.util.FileResource.setCheckAliases(false)
-# wrapper.java.additional.5=-Dorg.mortbay.util.FileResource.checkAliases=false
+# wrapper.java.additional.7=-Dorg.mortbay.util.FileResource.checkAliases=false
 # PORTABLE installation:
 # uncomment the following
-#wrapper.java.additional.5=-Di2p.dir.pid="$INSTALL_PATH"
-#wrapper.java.additional.5.stripquotes=TRUE
-#wrapper.java.additional.6=-Di2p.dir.temp="$INSTALL_PATH"
-#wrapper.java.additional.6.stripquotes=TRUE
-#wrapper.java.additional.7=-Di2p.dir.config="$INSTALL_PATH"
+#wrapper.java.additional.7=-Di2p.dir.pid="$INSTALL_PATH"
 #wrapper.java.additional.7.stripquotes=TRUE
+#wrapper.java.additional.8=-Di2p.dir.temp="$INSTALL_PATH"
+#wrapper.java.additional.8.stripquotes=TRUE
+#wrapper.java.additional.9=-Di2p.dir.config="$INSTALL_PATH"
+#wrapper.java.additional.9.stripquotes=TRUE
 #
 # Uncomment this for better performance.
 # If it doesn't work, server mode is not available in your JVM.
 # This may not be required if your machine is already "server-class".
 # See http://java.sun.com/j2se/1.5.0/docs/guide/vm/server-class.html
-#wrapper.java.additional.6=-server
+#wrapper.java.additional.7=-server
 
 # Initial Java Heap Size (in MB)
 #wrapper.java.initmemory=4