diff --git a/wiki/Troubleshooting.wiki b/wiki/Troubleshooting.wiki
index c64b253b..3e923517 100644
--- a/wiki/Troubleshooting.wiki
+++ b/wiki/Troubleshooting.wiki
@@ -34,6 +34,12 @@ ospf6d -d
 vtysh -b
 }}}
 
+  * *Tested OpenVZ kernel versions:*
+    * 2.6.18-128.1.1.el5.028stab062.3 - sometimes IPv6 addresses are not set properly; during shutdown some containers cause this message `unregister_netdevice: waiting for lo=e319a800 to become free. Usage count = 8 ve=1000 unregister_netdevice: device e319a800 marked to leak free_netdev: device lo=e319a800 leaked`
+    * 2.6.18-128.2.1.el5.028stab064.4 -
+
+
+
 == FreeBSD version == 
  * *debugging commands:*
    * `vimage -l` - lists all running vimages