Hi to all, Using LDAP with IPv6 support, there is no response from the Windows 2003 server AD after we provide the correct username and password when IPv6 settings in Windows 2003 Server Active directory is enabled. If IPv6 settings of W2k3 server is disabled, there is no problem. We can succesfully login and browse objects. In ldap_sasl_bind, the error occurs in connect() function and returns "LDAP server down" error. What could be the cause of this? Hope you can help me :-) Thanks in advance, rukia