disable ipv6 systcl call, as ipv6 is not enabled by default

SVN-Revision: 12351

package/base-files/files/etc/sysctl.conf

@@ -9,7 +9,7 @@ net.ipv4.tcp_fin_timeout=30
 net.ipv4.tcp_keepalive_time=120
 net.ipv4.tcp_syncookies=1
 net.ipv4.tcp_timestamps=0
-net.ipv4.netfilter.ip_conntrack_tcp_timeout_established=3600                    
-net.ipv4.netfilter.ip_conntrack_udp_timeout=60                                  
-net.ipv4.netfilter.ip_conntrack_udp_timeout_stream=180                          
-net.ipv6.conf.all.forwarding=1
+net.ipv4.netfilter.ip_conntrack_tcp_timeout_established=3600
+net.ipv4.netfilter.ip_conntrack_udp_timeout=60
+net.ipv4.netfilter.ip_conntrack_udp_timeout_stream=180
+# net.ipv6.conf.all.forwarding=1